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试验经过磷矿粉(贵阳矿种)全磷量含(P_2O_5)30.60%,粉剂细度100目.土壤类型:一般黄泥土,速效性磷5.59ppm;低质黄泥土,速效性磷6.63ppm;白粉土,速效性磷3.20ppm.磷矿粉施用量分每亩80斤、160斤、240斤.过磷酸钙施用量减半,分每亩40斤、80斤、120斤.以不施磷为统一对照.供试油菜品种宁7-118.小区面积0.05亩,重复3次,随机区组.移栽密度7500株/亩.磷肥均随根肥施用.不施有机肥料,严格控制氮素化肥.全生育期施硫酸铵2次,计60斤/亩.
The test results showed that the total P content of P (O_2O_5) was 30.60% (P_2O_5), and the fineness of the powder was 100 mesh after passing the phosphate rock (Guiyang). Soil types: general yellow soil, available phosphorus 5.59ppm, low quality yellow soil, available phosphorus 6.63ppm, Clay soil, available phosphorus 3.20ppm. Application of phosphate rock powder Fenfen 80 pounds per mu, 160 kg, 240 kg. Sulfate half the amount of points, divided into 40 pounds per mu, 80 pounds, 120 pounds. For a unified control for the test rapeseed varieties Ning 7-118. Community area of 0.05 acres, repeated 3 times, randomized block .Transplanting density of 7500 plants / mu.Phosphate fertilizer are applied with root fertilizer.Under the application of organic fertilizers, strict control of nitrogen Fertilizer. The whole growth period of ammonium sulfate twice, accounting for 60 kg / mu.