氮磷钾配施沼气肥对早稻产量和品质的影响

Effect of Combined Application of N,P,K and Biogas Fertilizers on Early Rice Yield and Quality

通过田间试验研究沼气肥对土壤供氮能力以及早稻产量及其构成因素、品质性状、稻田主要病虫害的影响。结果表明:增施沼气肥可显著提高早稻的有效穗数和实粒数,显著提高产量。在等量氮磷钾下,与常规施肥相比增产17.81%。等量沼气肥下,沼气肥与常规施肥中减少20%氮和33%钾用量西施处理比与常规施肥配施处理略有减产,仅增产4.24%,但比常规施肥处理增产13.03%。施用沼气肥对早稻稻米碾米品质和外观品质影响不明显,但稻米的食味品质和营养品质明显改善。施用沼气肥还可以减轻水稻主要病虫害的发生和危害。

Effects of biogas fertilizers on soil nitrogen supply capacity,as well as the early rice＇s yield and its components,quality and disease index were studied by field experiment.The results showed that biogas fertilizers application could significantly increase the effective panicle,Kernel Number per Spike of early rice and grain yield.Increasing biogas fertilizers application could gain 17.81 percent higher than that of chemical fertilizers only.There was only 4.24 percent decrease of yield,when the amounts of nitrogen and potassium fertilizer decreased 22 percent and 33 percent respectively with the same biogas manure fertilization rate;however,those applications would significantly increase yield by 13.03 % in comparison with chemical fertilizers only.Applying biogas fertilizers did not obviously affect milling quality and appearance quality of early rice,but the rice eating and nutritional quality significantly improved.Biogas fertilizer application could also reduce the occurrence and hazards of rice diseases and insect pests.