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水稻高效施氮期及其适宜用量探讨杨生茂，何其耀，何贵文（甘肃省农业科学院土肥所兰州７３００７０）白银市沿黄灌区水稻种植面积４方多亩，主要集中分布在靖远县境内。随着生产水平和物质投入的增加，水稻单产有了较大的提高，但从整体上讲，该区水稻生产未形成完整配套...
Study on Efficient N Application Stage and Suitable Dosage in Rice YANG Sheng-mao, HE Qi-yao, HE Gui-wen (Soil and Fertilizer Institute of Gansu Academy of Agricultural Sciences, Lanzhou 730070) Rice planting area along the Yellow River in Baiyin City is 4 mu and mainly concentrated in Jingyuan County. With the increase of production level and material input, the yield of rice has been greatly increased, but on the whole, the rice production in this area has not formed a complete matching ...