稻草还田腐熟与化肥配施对晚稻产量及土壤理化性状的影响

稻草还田腐熟可以改善土壤理化性状,对水稻生长的经济性状指标有一定的影响,稻草还田腐熟后提供的氮、磷、钾营养元素可以减施化肥用量。试验中与无稻草还田常规施肥相比,稻草还田腐熟,以氮磷肥用量减少10%,钾肥用量减少10%~20%为宜,可使当季土壤有机质含量增加0.1~0.2 g/kg,提高0.3%~0.6%,而产量、产值和纯收益无明显差异。

Effect of Straw Counters-field Rotten and Fertilizer NPK Microstructure on Late Rice Yield and Soil Physical and Chemical Properties

Straw counters-field rotten can improve soil physical and chemical properties, the economic indicators of rice growth has certain influence, after the straw counters-field rotten provide nitrogen, phosphorus and potassium nutrient elements can reduce fertilizer use. The results showed that the experiment compared with no straw countersfield conventional fertilization, straw counters-field rotten, with 10% less dosage of nitrogen and phosphorus fertilizer, potash fertilizer consumption reduced by 10% ~ 20% advisable, can make the soil organic matter content in the quarter increased by 0.1 ~ 0.2 g/kg, increased by 0.3% ~ 0.6%, and no difference between the yield and output value and the net benefits.