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由于过磷酸钙易被土壤固定,肥效转化慢。作物难以吸收利用。所以,近年来我县社员试行磷肥施前与畜肥混合堆沤发酵,然后再施入地里,增产效果显著。据调查,亩施过磷酸钙100斤,施前与畜粪混合沤制的平均亩产小麦759.2斤,比不混沤的亩产616.6斤,增产23.1％。磷肥与畜粪混合堆沤发酵后施用的好处是: (一)提高肥效。有机肥在腐烂过程中产生大量有机酸,能促进难溶磷的分解,有利作物吸收,减少磷的固定。 (二)避免烧苗。过磷酸钙含游离酸较多,若直接施用,用量
As the superphosphate easily fixed soil, fertilizer conversion slow. Crops are difficult to absorb and utilize. Therefore, in recent years, members of our county trial P leaching before fertilizer and livestock manure mixed reactor 沤 fermentation, and then applied to the ground, yield significant results. According to the survey, Mushu had 100 kilograms of calcium phosphate. The average mu yield of 759.2 kilograms of wheat per mu before mixing with livestock excrement was 616.6 kilograms more than that of non-mixed mu rice, an increase of 23.1 percent. Phosphate fertilizer and livestock manure mixed pile 沤 fermented application benefits are: (A) to improve fertilizer efficiency. Organic fertilizer in the decay process to produce a large number of organic acids, can promote the decomposition of insoluble phosphorus, favorable crop absorption, reduce phosphorus fixation. (B) to avoid burning seedlings. SSP containing more free acid, if direct application, dosage