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秋季种麦时,由于磷肥紧缺,加上抢收抢种时间紧张,很多地块施不上磷肥,严重地影响着小麦产量的提高。为了探讨冬小麦春季追肥施磷肥的效果,弥补底磷的不足,我们在城关镇南王庄村农事场作了冬小麦春季追施磷肥效果试验。现将试验结果报告如下: 一、试验条件和方法采用大田小区试验。试验地为轻壤质碳酸盐褐土,肥力中上等,历年小麦亩产600斤左右。所用肥料为二元复合肥和硝铵。复合肥含氮和五氧化二磷各为15％,硝铵含氮量为34％。试验设两个处理,分两次施肥,互比排列,每个处理两个小区,小区面积0.1亩。处理甲在3月23日、小麦返青后追肥,处理乙在1月10日,小麦起身期追肥。两个处理的第(?)小区追硝铵2.5斤(含氮0.85斤),第二小区
Autumn wheat, due to the shortage of phosphate, coupled with the rush to grab seed rush time, a lot of plots do not apply phosphate, a serious impact on wheat yield. In order to investigate the effect of winter wheat topdressing phosphorus fertilizer in spring and make up for the shortage of bottom phosphorus, we conducted winter wheat topdressing phosphate fertilizer experiment in Nanwangzhuang village farm of Chengguan town. The test results are reported as follows: First, the test conditions and methods used field test. Test for the light loess carbonate cinnamon, fertility in the finest, pasture wheat yield of about 600 pounds. The fertilizer used is binary compound fertilizer and ammonium nitrate. Compound fertilizer nitrogen and phosphorus pentoxide each 15%, ammonium nitrate nitrogen content of 34%. Experiment set up two treatments, divided into two fertilizers, each arranged in pairs, each dealing with two plots, the plot area of 0.1 acres. A treatment on March 23, topdressing wheat after top dressing, treatment B on January 10, wheat from the top dressing. The two treatment of the first (?) District chang ammonium 2.5 kg (nitrogen 0.85 kg), the second district