以单季稻浙粳88和春优84为材料,试验比较了不同施肥方案对杭州市萧山区水稻主要病虫害和产量的影响。结果表明,施肥调节处理水稻主要害虫稻飞虱和稻纵卷叶螟、主要病害纹枯病和稻曲病的发生和为害均较对照显著减轻;同时,浙粳88和春优84分别增产7.21%和1.68%。施肥调节的具体措施包括氮肥后移、增加氮肥中穗粒肥的使用比例和增施磷钾肥。
关键词:
水稻; 施肥调节; 氮肥; 病虫害; 产量
The effects of different fertilization application on rice main pests, diseases and yields of rice were compared by using rice cultivars Zhejing 88 and Chunyou 84 as materials. The results indicated that the population and damage of rice main pests (planthopper and leaffolder) and main diseases (sheath blight and rice false smut) in the fields with modified fertilizer application were significantly lower than those in control fields. Meanwhile, the yields of Zhejing 88 and Chunyou 84 were increased by 7.21% and 1.68%, respectively. The effects of modified fertilizer application, which based on local fertilization application of Xiaoshan district in Hanzhou city, the modified fertilizer application including nitrogen fertilizer applied later, increasing the proportion of nitrogen application during panicle and granular periods and utilizing more phosphatic and potassic fertilizer.
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