目前在豫西丘陵旱区以小麦为主的一年两熟制中多为小麦—谷子,年年麦谷连作,造成地力减退,影响小麦产量的提高。这些地区历史上很少种植大豆,没有把养地作物大豆列入轮作制内,只种很小面积的黑豆。黑豆生长期长,产量低,腾茬晚,影响小麦适时播种。为把大豆列入轮作制内,找出适宜的轮作方式,于1983年在伊川县丘陵旱区引种大豆,並进行不同轮作方式的培肥增产效 At present, in the hilly and arid areas of western Henan, wheat is mostly wheat-millet in the year, and annual wheat-wheat intercropping causes the decline of soil fertility and the increase of wheat yield. Soybean has historically been poorly planted in these areas, and the cultivated soybean crop has not been included in the crop rotation system and has only a small area of ​​black beans. Black beans grow long, low yield, stubble late, affect the timely sowing of wheat. In order to put soybeans into the crop rotation system, to find out the appropriate rotation mode, in 1983 Yichuan County introduced arable soybean hilly areas, and the rotation of different ways of fertilization by the yield