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湖南省零陵县接里桥公社画眉大队,田多产量低,其主要原因是土壤严重缺磷,致使水稻“番秋”减产。1963年大面积施用过磷酸钙,增产效果很好。1964年在大量施用过磷酸钙的同时,又施用了钙镁磷肥。群众普遍反映肥效很好。唐家生产队20丘9.75亩“番秋”田施了钙镁磷肥后,禾苗不番秋,坐蔸青,发蔸快,成熟早,穗子长,谷粒饱满,产量高,平均亩产476斤,比未施的亩产281斤增产69％。特别是野藕塘背2.2亩水稻施钙镁磷肥后,亩产458斤,比相邻的0.7亩未施的亩产150.8斤增产2倍。又据胡家生产队40丘29.9亩田的对比试验验收材料统计,13丘7.4亩“白水”田平均亩产334.5斤;19丘17.4亩施了2000斤猪牛粪草的亩产368.6斤;8丘5.1亩施钙镁磷肥(100斤/亩)亩产484.6斤,施钙镁磷肥比白水田和施猪牛粪草的,分别增产44.8％和31.4％。
Lingling County, Hunan Province, then bridge commune thrush brigade, more than the low yield, the main reason is the soil is a serious shortage of phosphorus, resulting in rice “Fanqiu” cut. 1963 large area application of superphosphate, yield a good effect. In 1964 in a large number of application of superphosphate at the same time, and the application of calcium magnesium phosphate. The general public reflect the fertilizer efficiency is very good. Tangjia production team 20 mound 9.75 acres “Fanqiu” field after the calcium magnesium phosphate, the seedlings are not Fancai autumn, sit Juqing, hair Ju fast, mature early, ears long, full of grains, high yield, the average yield of 476 Kg, an increase of 69% over 281 kg of unproduced mu produce. Especially wild lotus pond 2.2 acres of paddy after applying calcium magnesium phosphate, 458 kg per mu, than the adjacent 0.7 acres of mu not produced 150.8 kg mu yield increase of 2 times. According to the statistics of the acceptance test of the 29.9-mu field in Huqiu production team, the average yield per mu of 334 mu of “Baishui” field of 13 mounds was 334.5 kg; the volume of mu yield of 2000 kg of pig manure was 368.6 kg for 17.4 mu of mound; 8 mound 5.1 mu of calcium magnesium phosphate fertilizer (100 kg / mu) 484.6 kg per mu, applying calcium magnesium phosphate fertilizer than white paddy field and pig manure, respectively, an increase of 44.8% and 31.4%.