LEADING SECTOR RELATIONSHIP TO INTER-REGIONAL ECONOMIC GROWTH IN THE SUBOSUKAWONOSRATEN REGION

This study aims to analyze the relationship between economic growth regency in Subosukawonosraten Region with leading sector approach. The linkage of leading sectors towards economic growth of other regions in the Subosukawonosraten Region determined by Multiple Linear Regression analysis. The results of the Multiple Linear Regression analysis is the most sector that has a significant influence on the other regional economic growth is sectors industry. In addition, sectors that have a significant influence on regional economic growth are real estate, agriculture, construction, information and communication, accommodation provision, trade, government and water supply, respectively. This research method is descriptive quantitative. This research was conducted in districts / cities located in Subosukawonosraten Region (Surakarta, Boyolali, Sukoharjo, Karanganyar, Wonogiri, Sragen and Klaten) using publication data from Badan Pusat Statistik Central Java Province and district / city in Subosukawonosraten Region in 2007-2019. The method of analysis used in this study is multiple linear regression analysis.


INTRODUCTION
Subosukawonosraten region has one city that becomes the center of growth and six districts that become the area (hinterland) area around the center of growth.
Surakarta city has been designated as the center of growth or development of the region with the establishment of RTURK Kodya Surakarta 1993 for Subosukawonosraten development area. As a strategy and policy of the central and regional governments in realizing regional autonomy and regional development, Surakarta city is designated as the center of development of east-south Central Java as the growth center of region IV.
Growth center as an alternative mobilizer, booster and supporter of economic development of the surrounding area to increase the income equality of the community.
In addition, the center of growth is also a bridge to the difference in economic activity opportunities. The growth center is formed from several dynamic sectors that are able to provide high output ratios in certain regions and can provide a wide impact (spread effect) and multiple effects(multiple effects)in other sectors with a wider area. In the implementation of the creation of a growth center that will have an impact on the surrounding area needs to be followed by trickledown effect (downward impact) or welfare from urban to lower areas (hinterland and rural) with the mechanism of urban hierarchy and spread effect (spread effect) of harmonious activity between the growth center and the superior resources of hinterland region (Imelda, 2013).
The existence of interactions related to inter-regional activities in the Subosukawonosraten Region can lead to interrelationships between regions.
Interrelationships between regions that have close proximity within a region can create spatial interrelationships. Autocorrelation or spatial autocorrelation is a space object that has interrelationship between regions so that something that happens in one area is related to another thing that happens in the back area or neighboring areas.
According to the law put forward by Tobler, The Law of Geography I reads "Everything is related to everything else, but near things are more related than distant things", in terms of geography the statement indicates that everything that happens has a related relationship, especially events that have a close distance will have the highest connection or more related (Wibisono and Kuncoro, 2015).
In this regard, economic activity is closely related to the economic sector. The economic sector that is able to impact economic growth in other regions is the regional leading sector. The leading sector is also a simple and useful form of income as a means of clarifying the structure of the region concerned, while also providing a strong foundation for regional income studies. The leadig sector can be used to look at factors that can drive the growth of the surrounding region. The superior sector can be formed from the development of production produced by the potential owned by each region.
In addition to being able to meet the demand from within the region, the superior sector can also meet the demand from outside the surrounding area. A sector can be said to be a superior sector if the sector has an advantage both comparatively and competitively (Erawati and Yasa, 2011).
Various theories and research results related to the leading sectors in interregional relations are still important to continue to conduct continuous analysis to be able to know how the influence of the regional leading sector on the economic growth of other regions around it to know how the interrelationship and interaction between districts / cities in Subosukawonosraten region. This research method is descriptive quantitative. This research was conducted in districts / cities located in Subosukawonosraten Region (Surakarta, Boyolali, Sukoharjo, Karanganyar, Wonogiri, Sragen and Klaten) using publication data from Badan Pusat Statistik Central Java Province and district / city in Subosukawonosraten Region in 2007-2019. The method of analysis used in this study is multiple linear regression analysis. In analyzing the relationship between the leading sectors as independent variables to the growth of regions as dependent variables, data processing is carried out by multiple linear regression analysis methods. Multiple linear regression analyses were conducted because the independent variables in this study amounted to more than one. Analysis of the influence of the leading sector on regional economic growth which is a double linear regression analysis previously conducted the detection of deviations of classical assumptions. Classic assumption testing is used to qualify linear regression analysis as the best assessor. The results of calculations in the analysis can be used as the basis for policy determination. The classic assumption test consists of several tests, such as normality test, heteroskedastisity test, autocorrelation test, and multicolinearity test.
Regression test, this statistical test is used to describe the pattern of positive and significant influence of a region's leading sector as an independent variable with hinterland regional economic growth as a dependent variable. The data obtained will be tested using F test and t test. This analysis is used to determine the influence of the growth of the central sector's leading sector on the economic growth of spillover areas.
This analysis is also used to calculate the value of a regression coefficient that shows the magnitude of the influence of independent variables on dependent variables with the following formulas:

RESULTS AND DISCUSSION
The results of the study of the influence of the regional leading sector on the economic growth of the central region in the Subosukawonosraten Region using this regression analysis showed results that support the research of Erawati and Yasa   (2018) which shows the processing industry sector has an effect on economic growth and is considered as the leading sector in accordance with Hirschman's theory that the rapid growth of one or more industries encourages the expansion of other industries. Based on the geographical location, Sukoharjo and Karanganyar districts are directly adjacent to Surakarta City, this can lead to the formation of strong inter-regional relations in the industry's leading sector of the two regions to be able to influence and overflow the economic growth of Surakarta City. As for Boyolali Regency, Wonogiri Regency and Klaten Regency are not directly adjacent, but Boyolali Regency has a fairly close distance to Surakarta City.
The agricultural sector of Sukoharjo Regency has a significant impact on the economic growth of Surakarta. The results of this study support Anggraini's research (2019) which states that the agricultural sector has a significant influence on economic growth. Sukoharjo regency has an area of agricultural land of about 20,460 ha or 43.8% of the total area of Sukoharjo Regency. Sukoharjo regency is directly adjacent to Surakarta city and has a distance between growth centers of about 8.28 km, so the cost required in economic activities is relatively lower. In addition, the growth rate of the agricultural sector of Sukoharjo Regency is higher than the growth rate of the agricultural sector of Surakarta City.
The leading real estate sectors of Sukoharjo and Sragen districts have a significant impact on the economic growth of Surakarta City. Geographically, Sukoharjo regency is directly adjacent to Surakarta City, and Sragen Regency is not directly adjacent. Sukoharjo and Sragen districts have a real estate sector growth rate from 2007-2019 of more than 100 percent.
The leading sector of the provision of accommodation from Sragen Regency has a significant impact on the economic growth of Surakarta City. The results of this study support the research of Rizkova et al. , (2016) which states that there is a partial and significant influence of the accommodation sector on economic growth. This is in line with the results of research conducted by Ouwpoly and Anisah (2018) which stated that the accommodation supply sector is the top three dominant sectors that have promising business opportunities with more than 95% of business activities and labor can be absorbed in the accommodation supply sector. The supply sector of accommodation, food and drink Sragen has a growth rate of more than 130 percent with the support of the city of Surakarta so as to have an impact again on the growth of Surakarta City. The growth of the sector of providing accommodation, food and drink Sragen can be supported by the city of Surakarta because the city of Surakarta as a growth center and a trade center that is able to provide a variety of needs or infrastructure that can support the growth of the accommodation supply sector of Sragen Regency, so that indirectly, the economic growth of Surakarta city also increased. regions. In addition, the distance from each area to Sukoharjo regency is relatively close, so the cost required to carry out economic activities is also quite low. This causes the leading sector of regional industry around Sukoharjo Regency to influence economic growth with interaction between regions.
The construction sector of Boyolali Regency significantly influenced the economic growth of Sukoharjo Regency. Geographically, Sukoharjo regency is directly adjacent to Boyolali Regency. In addition, the distance between the central areas of the two districts is relatively close. The growth rate of Boyolali construction sector reached more than 100 percent from 2007-2019 (BPS Boyolali Regency, 2020), greater than the growth rate of Sukoharjo construction sector which is 84 percent (BPS Sukoharjo Regency, 2020). In this case, the leading construction sector of Boyolali Regency in its development can also use raw materials and human resources from Sukoharjo Regency at a relatively low cost because the distance between the two districts is close so that with the growth of the construction sector of Boyolali Regency, the economic growth of Sukoharjo Regency with inter-regional links can also increase. Regency, 2020), can provide an abundance of growth of Sukoharjo Regency because of the access and distance that is very affordable so as to facilitate interaction and inter-regional relations.
The excellent sector of Sragen District accommodation has a significant impact on the economic growth of Sukoharjo Regency. The growth of Sragen accommodation, food and drink supply sector has a rapid growth rate and higher competitiveness than the same sector in the province, so even though Sragen and Sukoharjo districts are not Geographically, Wonogiri Regency is located in the southern part of Subosukawonosraten Region directly adjacent to Sukoharjo and Karanganyar districts and the distance between the districts is relatively close. The industrial sector of Sukoharjo and Karanganyar districts can experience rapid growth with interaction and access between affordable areas. The costs required for inter-regional economic activities are also lower. So the level of interaction between these areas is quite strong.
Meanwhile, for Surakarta and Boyolali districts although not directly adjacent to Wonogiri Regency, but these two areas have a strong industry-leading sector and high Regency is directly adjacent to Sukoharjo Regency and has a relatively close distance.

Agricultural products in Sukoharjo Regency can help supply food needs in Wonogiri
Regency which has a less productive soil topography. This can make the growth of the agricultural sector of Sukoharjo Regency able to have an abundant impact on the economic growth of Wonogiri Regency because of the distance factor that can make the cost of economic activities more efficient.
The leading real estate sectors of Sukoharjo and Sragen districts have significant influence on the economic growth of Wonogiri Regency. Geographically, Wonogiri Regency is located directly adjacent to Sukoharjo Regency and has a relatively close distance. Meanwhile, Wonogiri regency is not directly adjacent to Sragen Regency.
However, the growth rate from 2007-2019 in Sragen real estate sector is 128 percent higher than Sukoharjo Regency by 112 percent (BPS of Central Java Province, 2020).
The growth of the real estate sector of Sukoharjo and Sragen districts can be supported by abundant raw materials from Wonogiri Regency such as limestone and wood, so that it can also provide benefits and encourage economic growth in Wonogiri Regency.
f. Interaction of Regional Leading Sectors with Economic Growth of Sragen

Regency
The leading sectors that have a significant influence on the economic growth of   (2018) which shows that the processing industry sector has an effect on economic growth and is considered as the leading sector in accordance with Hirschman's theory that the rapid growth of one or more industries encourages the expansion of other industries.  sector as well as the information and communication sector. In this case, it can be concluded that the excellent sector and close proximity, able to show that there is