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关中灌区复种指数高,夏、秋两料接茬紧,绿肥插不进去,有限的农肥也来不及施作底肥。为了解决缺肥、施肥的矛盾,在户县与贫下中农一起,开展粮肥间套改制的试验示范和调查研究。通过1973-74两年12个点275亩试验,初步得出一套改制的有效措施。一、两种改制方式及其优点粮肥间套方式较多,经济效果不一,通过调查、试验,以下两种方式适合当前灌区应用:(1)“三粮一肥”间套方式。采取3-5条带种植:秋播时,以3尺宽种大
Guanzhong irrigation area has a high multiplying index, summer and autumn, followed by the two crops, green manure does not get in, limited fertilizer too late to apply as the base fertilizer. In order to solve the contradiction between lack of fertilizer and fertilization, Hu County and poor peasants are working together to carry out experimental demonstration and investigation of the conversion of grain-fertilizer sets. Passed the test of 275 acres at 12 spots in 1973-74 for two years, initially came up with a set of effective measures for restructuring. First, two kinds of restructuring methods and their advantages There are many ways of fertilizer cover, economic effects vary, through the investigation, test, the following two ways for the current irrigation applications: (1) “Sanliang a fat” intercropping. 3-5 strips to take planting: autumn sowing, 3 feet wide species