我国西部、北部广大地区，一年一熟有余，两熟不足，7月中旬小麦收获后至冬季来临之前的2个多月时间内耕地裸露，习惯上不种植作物，不仅浪费光热和水资源，而且容易造成水土流失。　　为了解决这一问题，中国工程院院士、油菜专家、华中农业大学傅廷栋教授通过考察研究，发现 In the vast areas of western and northern China, there is more than one ripening crop in one year and two ripening crops. In the period of more than two months after the wheat is harvested in July and before winter approaching, cultivated land is barely covered and crops are not used conventionally. Not only is the waste of solar-thermal and water resources , But also easily lead to soil erosion. In order to solve this problem, the Chinese Academy of Engineering, rape experts, Huazhong Agricultural University, Professor Fu Tingdong through study and found that