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针对冷浸田水温泥温低,早稻生育前期土壤有效磷供给不足的问题,试验采取磷肥撒施、磷肥集中施、磷肥与活化剂配施、有机无机磷配施等不同施磷方式,研究其对土壤养分供应和水稻产量的影响,并探讨提高磷肥利用率的途径。结果表明:冷浸田早稻施磷肥能显著提高单产,有机无机磷肥配施、集中施磷肥和添加活化剂处理与NPK常规撒施处理相比较,有效提高了土壤磷酸铝盐和磷酸钙盐含量,土壤好气性细菌、真菌和放线菌数量明显增加,水稻磷肥利用率提高明显,是改良冷浸田、提高早稻产量的较适宜施磷方式。
In view of the problem of low temperature of muddy water in cold-dip field and insufficient supply of available phosphorus in early-stage rice growth, different phosphorus application methods, such as application of phosphate fertilizer, application of phosphate fertilizer, application of phosphate fertilizer and activator, and combination of organic and inorganic phosphorus, On soil nutrient supply and rice yield, and explore ways to improve the utilization of phosphate fertilizer. The results showed that phosphorus application in early rice in cold soaking field could significantly increase yield. Compared with conventional NPK application, organic phosphorus fertilizer and concentrated phosphate fertilizer and additive activator increased the contents of aluminum phosphate and calcium phosphate, Soil aerobic bacteria, fungi and actinomycetes significantly increased the number of rice, phosphorus utilization rate increased significantly, is to improve the cold dip field, improve the yield of more suitable early rice phosphorus.