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我省地貌类型多样,各地自然环境差异较大,因此形成了不同类型的中低产田,其制约粮棉增产的因素既有共同点,也有不同点,所以,在改造中低产田中,要针对不同类型的特点,采取有效的措施。 1.缺肥类。主要指保灌的水浇地,比较好的沟坝地、河滩地及高标准的水平梯田。原因是对土地采取掠夺式经营,不注意养地,使地力逐年下降。改造的首要任务是因地制宜进行秸秆还田,复种绿肥,增施农家有机肥,同时要增施化肥,注意科学施
Different types of low and medium-yielding fields are formed in different types of landscapes in our province. There are both commonalities and differences in the factors that restrict the yield-increasing of grain and cotton. Therefore, Type of characteristics, take effective measures. 1. lack of fat Mainly refers to irrigated irrigated land, better dam ditch, flood land and a high standard of terraced fields. The reason is that the land is taken predatory management, paying no attention to raising land so that the earth’s force decreases year by year. Transformation of the primary task is to adapt to local conditions straw, green manure compound, increase farm organic fertilizer, while increasing fertilizer, pay attention to scientific facilities