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硼肥喷施以防治油菜花而不实的效果是良好的.我们在正常年景的1973年,喷施硼肥,增产43%;在花而不实较轻的1974年喷施,增产76%;在花而不实严重的1975年喷施,增产218%.今年(指1979年,下同) 我们又进行了硼肥基施对比试验,其增产效果更为明显.现将试验结果报告如下: 试验用地为粉砂粘壤质土壤,播种前土样分析:全氮含量0.072%,全磷及速效磷含量分别为0.054%及21ppm,全硼及有效硼含量分别为42.5ppm及0.025ppm. 试验共有4个处理: (1) 硼肥作基肥,是用硼砂工业品(下同)捣碎后,先与
Boron fertilizers to prevent rape blight and the false effect is good. We in normal years of 1973, boron fertilizer, an increase of 43%; in the flowers and less frivolous in 1974, spraying, yield 76 %; Spray in the flowers but not serious in 1975, an increase of 218% .This year (referring to 1979, the same below) we have carried out a comparison test of boron fertilizer infrastructure, the effect of increasing production is more obvious now test results report The test sites were silty clay loamy soil. Before sowing, the soil samples were analyzed with total nitrogen content of 0.072%, total phosphorus and available phosphorus content of 0.054% and 21ppm respectively, total boron and available boron content of 42.5ppm and 0.025ppm There are 4 treatments in total: (1) Boron fertilizer is used as basal fertilizer, which is made by borax industrial products (the same below)