当前我省西部地区玉米、向日葵播种面积大幅度增加,养地作物及调节茬口作物的播种面积减少,加之化肥用量迅速增加,有机肥数量不足、品质不佳,致使土壤养分不谐调,抗灾性能很差,粮食单产低而不稳。类此问题,急待解决。我们设置了两个轮作周期的几种轮作方式,研究其中土壤肥力因素、酶活性与产量的关系,为定向培肥土壤提供参考。 At present, the sown area of ​​maize and sunflower in the western part of our province has increased substantially. The sown area of ​​crops for raising land and crops for stubble crops has been reduced. In addition, the amount of fertilizer has increased rapidly. The quantity of organic fertilizer is insufficient and the quality is not good. Poor, low and unstable grain yields. Such issues, urgent solution. We set up two rotation modes of two rotation cycles, and studied the relationship between soil fertility factors, enzyme activities and yield, and provided reference for directional fertilization of soil.