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油菜具有养地和能有效解决大、小春粮烟茬口矛盾的优势,已成为云南小春种植中除小麦、蚕豆外的第三大重要作物。经过多年发展,种植面积和产量增幅均居各作物之首,从1978年到2009年,面积由135.06万亩增加到380.4万亩,总产量由3.18万t增加到45.6万t,亩产由24 kg提高到120 kg。2009年油菜籽产量占油料作物总产量的86.1%,油菜已成为云南省最重要的油料作物。究其发展原因,除种
Rape has the advantages of raising land and effectively solving the contradiction between the big and small grains of tobacco stubble and has become the third most important crop except for wheat and broad beans in Xiaochun planting. After years of development, the acreage and output increase ranked the first in all crops. From 1978 to 2009, the area increased from 1,350,600 mu to 3,804,000 mu, and the total output increased from 31,800 t to 456,000 t. The output per mu was increased from 24 kg to 120 kg. Rapeseed production in 2009 accounted for 86.1% of the total output of oilseed crops, rapeseed has become the most important oil crops in Yunnan Province. Investigate its development reasons, in addition to species