合理倒茬是充分利用土地、培养地力、减轻病虫害,连续夺取农作物高产稳产的重要措施。农作物倒茬应遵循以下原则进行安排。 1.利用庄稼需要养分的不同倒茬。小麦、玉米等对氮、磷吸收量多,对钙利用的少,大豆等豆科作物对钙要求严格,地瓜等薯类需要较多的钾。在同一块地里连续种植一种庄稼,会导致某一养 Reasonable stubble is an important measure to make full use of land, cultivate fertility, reduce pests and diseases, and continuously capture the high and stable yield of crops. The crop should be arranged according to the following principles. 1. Take advantage of the different stubbles that crops need for nutrients. Wheat, corn and other nitrogen and phosphorus uptake, less use of calcium, soybeans and other leguminous crops demanding calcium, potatoes and other potatoes require more potassium. Planting a crop continuously in the same field can result in some feeding