根据两熟地区自然条件及两熟栽培的经济意义,在冬作行间间种一年生固氮绿肥作物,是开辟肥源的一项经济有效的途径。 湖北鄂城、浙江丽水等地有在麦田春间紫云英;江苏常熟等地有在麦田混种金花菜;安徽有在麦田间作黄豆、坭豆与紫云英作水稻基肥的增产经验。浙江慈溪县,1957年在48万8千亩棉田中,有98%冬季间作绿肥,结合其他农业技术措施,因 According to the natural conditions of two ripening areas and the economical significance of two-cropping cultivation, it is an economical and effective way to cultivate fertilizer sources by planting one-year nitrogen fixation green manure crops between winter rows. Hubei Echeng, Lishui, Zhejiang and other places in the field during the spring wheat milk vetiver; Changshu, Jiangsu and other places in the wheat field mixed with Cauliflower; Anhui in the wheat field for soybeans, beans and milk vetch for rice basal fertilizer production experience. In Cixi County, Zhejiang Province, 98% of 488,000 mu of cotton fields were green manures in winter in 1957. In combination with other agricultural techniques,