Study On Planting Suitability And Culture Techniques For Castor In The Coal-mining Subsidence Area Of Shenfu-Dongsheng Coal Mine

The research areas are the Huojitu mining area of Shenfu-Dongsheng Coal Mine. In Collapse of farmland of gaojiapan domestic, castor planted in a growing season growth in 2008 do orthogonal experiment to study the optimum cultivated varieties and the best planting technology. Research results shows, french hybrid CSR24.181 is more suitable for the local environment compare to other 5 varieties. Castor is tolerant of thermophilic crops,it requires the high temperature in summer and autumn.But the cool autumn days comes early and the temperature low,meanwhile frost comes early in this aera. It can cause castor insufficient growth and freezing by early frost,if post the date of seeding. Moreover, it influence the seed maturation of castor and the output of castor. Therefore it must sow the seed early in Shenfu-Dongsheng Coal Mine. Seeds buried in 8cm is more suitable than buried in 5cm and buried in 3cm,the output of testplot increaseed 18.0% and 19.52% . The experiment shows,the spacing 60×60cm increase the output of the testplot 5.76% and 31.69% than the other two type of spacing. The spacing 60×60cm is the most suitable for Shenfu-Dongsheng Coal Mine aera. The seeds are treated by soaking with cold water,it increased the output of testplot 21.92% and 28.97% than the other two type of treated.