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近几年来,京、津、冀、鲁、豫、陕、晋等地的广大贫下中农创造出丰富多采的三种三收、两粮两肥、三粮一肥、三粮两肥等间作套种形式,对改良土壤,培养地力,增加复种,提高粮食产量和建设高产稳产农田,具有重大现实意义。 三粮一肥间作套种,是指在冬小麦、春玉米、夏玉米三种三收的基础上,秋季套种一茬苕子绿肥,作第二年春玉米的底肥。这种耕作制的主要优点是:充分用地,积极养
In recent years, the vast majority of poor and middle-level peasants in Beijing, Tianjin, Hebei, Shandong, Henan, Shaanxi, Shanxi and other regions have created a rich and varied collection of three kinds of straw, straw, grain, Interforestation forms have great practical significance for improving soil, cultivating fertility, increasing multiple cropping, increasing grain yield and building high and stable yield farmland. Inter-crop interplanting SanLiang fat refers to the three kinds of winter wheat, spring corn, summer maize harvest on the basis of a stubble autumn stubble green manure, as the second year of spring maize’s base fertilizer. The main advantage of this farming system is: full use of land, actively raising