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通过1981—1987年度的旱地小麦不同施肥与轮作试验看出:在年降水丰、平、歉及季节降水分布不同的条件下,合理施肥是增产的关键,旱年也是如此,旱地完全施用有机肥效果最好。有机肥不足,应根据作物需要、产量指标及地力等配合施用化肥,当前要重视氮磷混施;地力在300斤左右的条件下,实现亩产500斤的指标,在其它营养元素能满足时,可亩施 N10斤,P_2O_55—6斤;在年降水500mm条件下,施肥和其他栽培措施合理,旱地小麦亩产500斤是可以实现的。
According to different fertilization and rotation tests of wheat in dry land in 1981-1987, reasonable fertilization is the key to increasing yield under the conditions of annual rainfall abundance, flat apology and seasonal precipitation distribution, as well as in dry years. The application of organic fertilizer best effect. Organic manure is not enough, should be based on crop needs, yield indicators and fertility and other fertilizers should be applied, the current emphasis should be placed on nitrogen and phosphorus; soil strength of about 300 pounds, to achieve 500 kg per mu indicators, when other nutrients can meet , Can be applied N10 pounds, P_2O_55-6 pounds; 500mm annual precipitation conditions, fertilization and other cultivation measures reasonable, dry land yield of 500 pounds of wheat is achievable.