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为了弄清磷肥在我县黄绵土的施用效果,给推广提供依据,去年我站在赵家砭公社丁兴庄大队进行试验、示范.现将情况简结如下.1.春小麦施磷试验:去年3月在二队谷茬地进行,设施磷和氮磷配合两个处理,分别亩施过磷酸钙40斤,和过磷酸钙40斤+碳酸氢铵10斤,拌粪施入播种沟内.据5月7日调查,磷肥对春小麦苗期生长有明显促进作用,株高比对照增加2.4～4.3厘米,分蘗增加0.1～0.2个,次生长根增加0.7～1.2个,50株鲜重增加9～10.2克.氮磷配合的效果更突出.施用磷肥的增产效果显著,每亩穗数,每穗粒数及千粒重均比对照高,增产36.9%,氮磷配合的增产55.7%.见表1.
In order to clarify the application of phosphate fertilizer in loessial soil in our county, to provide a basis for the promotion, last year I stood in the Dingxing Zhuang commune Zhaozhuang Zhuang brigade to test and demonstrate the situation is summarized as follows: 1. Spring wheat phosphorus application: last year 3 Month stubble in the second team to carry out facilities phosphorus and nitrogen and phosphorus with the two treatment, respectively, Mushu over 40 kg of calcium phosphate, and 40 kg of superphosphate + ammonium bicarbonate 10 pounds, dung into the sowing ditch. According to May 7 survey, phosphorus fertilizer on the growth of spring wheat significantly promote the role of plant height increased 2.4 ~ 4.3 cm compared with the control, tillering increased 0.1 ~ 0.2, secondary root growth increased 0.7 ~ 1.2, 50 fresh weight increased 9 ~ 10.2 g. The combination of nitrogen and phosphorus was more prominent. The yield increase of the application of phosphate fertilizer was significant. The number of spikes per panicle, the number of grains per spike and the weight of thousand seeds were higher than the control, 36.9% increase and 55.7% increase of nitrogen and phosphorus.