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水稻植株吸氮量是植株干物重和植株全氮的乘积,它综合反映了植株氮素营养状况和植株生育质量,也是中后期施氮的重要依据。而测定植株干物重和植株全氮,需要一定的仪器设备,且费工费时。本试验目的是探索一套简易、准确的水稻中后期植株吸氮量诊断方法和预测,为中后期施氮量诊断提供可靠方法。
Nitrogen absorption of rice plants is the product of plant dry weight and plant total nitrogen, which reflects the status of plant nitrogen nutrition and plant reproductive quality, but also an important basis for nitrogen application in the late. The determination of plant dry weight and plant total nitrogen, the need for certain equipment, and time-consuming work. The purpose of this experiment is to explore a simple and accurate method for the determination of N uptake in the middle and late rice plants and to provide a reliable method for the diagnosis of nitrogen application in the middle and late stages.