中高肥力土壤水稻施肥技术研究——稳穗增粒施肥模式对水稻的增产与节肥效果

Study on fertilization methods of rice crop on paddy soil or moderate or high fertility.

作者在总结前人施肥模式成果的基础上,提出了稳穗增粒施肥模式。通过4年的田间试验,比较和分析了增产、节肥的效果及原因。结果表明:该模式比当前推行的3种参比模式增产5％～17％。生产7500kg/hm稻谷的氮肥用量控制在105～120kg/hm,至少可以节约氮肥25％～30％。在中高肥力土壤上,该模式是取得高产稳产和节肥的一个良好的选择,对节约能源和农田环境保护也有重要意义,具有推广价值。

From the systematic study of the field experiments on the effect of fertilization methods of rice crop in 1987 - 1990, the results obtained showed that the model of fertilization here proposed was better than other three models which were being used now. The yield of rice grain from the field experiments has increased by 5% -17% over others. Amounts of fertilizer applied,producing 7 500 kg yield of rice grain per hectare,were only 105-120 kg and at least 25% - 30% was saved. It's a good selection to use this model of N fertilization for obtaining stable high yield in rice production on the soil of moderate or high fertility,for protecting the environment against pollution of the paddy field and the ground water and saving the sources of energy. The model that was proposed is worthy to be recommended as a good fertilization teachnique.