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发展油菜生产,能用地养地,促进耕作改制,促进粮棉增产,增加经济收益。在我国北纬35°—37°的干旱高寒地区,有大面积的冬闲地,适宜发展冬油菜。但目前该区冬油菜的种植面积不足700万亩,占不到冬闲地面积的十分之一。妨碍冬油菜在该区迅速发展的主要气候因素是冬季干旱和高寒。冬季(12—2月)的降水量一般20—30毫米,只占全年降水量的
The development of rapeseed production, land can be used to promote farming and restructuring, and promote grain and cotton production, increase economic benefits. In our country’s arid and alpine latitude 35 ° -37 ° area, there is a large area of winter fallow land, suitable for the development of winter rape. However, at present, the planting area of winter rapeseed in this area is less than 7 million mu, accounting for one tenth of the area of winter fallow land. The main climatic factors hindering the rapid development of winter rape in this area are the winter drought and alpine. Winter (December-February) of the general rainfall of 20-30 mm, only the annual precipitation