论文部分内容阅读
[目的]探明沿江双季稻区适宜稻草、沼液还田量和化肥施用量下水稻优质高产氮肥运筹技术。[方法]将稻草3 750 kg/hm2和沼液15 000 kg/hm22种有机肥与化肥配合施用,同时结合氮肥不同运筹方式。[结果]施用稻草还田产量高于施用沼液,其增产原因是增加了有效穗和穗粒数。氮肥运筹方式中均以氮肥运筹基蘖穗为5∶3∶2的比例最高。[结论]不同种类有机肥对晚稻产量的影响较大,施用稻草处理产量较沼液处理要高;氮肥的运筹方式对晚稻产量也有影响,具体运筹方式与单施无机肥相似。
[Objective] The research aimed to find out the technology of high quality and high-yield nitrogen fertilizer in paddy rice fields suitable for rice straw, biogas slurry returning and fertilizer application. [Method] The 3 750 kg / hm2 rice straw and 15 000 kg / hm biogas slurry were fertilized with 22 kinds of organic manure and chemical fertilizers, and combined with different operating modes of nitrogen fertilizer. [Result] The yield of straw returning to field was higher than that of applying biogas slurry. The reason for increasing yield was that the effective spikes and grains per spike were increased. Nitrogen fertilizer operation are based on nitrogen fertilizer base tillering spike 5: 3: 2 the highest proportion. [Conclusion] The effects of different types of manure on the yield of late rice were greater than that of biogas slurry. The application mode of nitrogen fertilizer also had an impact on the yield of late rice. The specific operation mode was similar to that of single application of inorganic fertilizer.