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1958年—63年,我所先后对14种作物进行了磷肥肥效试验。供试作物类别及名称: 绿肥作物:苕子、扁豌子 粮食作物:水稻、小麦、大麦、红苕、蚕豆 经济作物:棉花 油料作物:大豆、芝 麻、油菜 园艺作物:番茄、甜 瓜、西瓜 试验地的土壤是砂壤质石灰性冲积土,PH7.2—7.6,有机质0.64—0.82％,全厂0.076—0.116％,全磷0.095％,速效磷7—10ppm。试验所用的过磷酸钙含有效磷14％左
In 1958-63, we conducted a series of fertilizer tests on 14 crops. Test crops Category and name of crops: Green manures Crops: Prickly heat, Flat peas Food crops: Rice, wheat, barley, red yeast rice, broad beans Economic crops: Cotton oil Crops: Soybeans, sesame and rape Horticultural crops: Tomato, melon, watermelon Of the soil is sandy loam calcareous alluvial soil, PH7.2-7.6, organic matter 0.64-0.82%, whole plant 0.076-0.116%, total phosphorus 0.095%, available phosphorus 7-10ppm. The superphosphate used in the experiment contained 14% of available phosphorus