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一般认为,施用磷钾肥料对降低水稻空壳率有良好作用,但在何时施用最为有利?能降低空壳率的幅度有多大?为了弄清这一问题进行本试验。试验过程
It is generally believed that the application of P and K fertilizers has a good effect on reducing the empty shell rate of rice, but at what time is the application most favorable? What is the rate of decreasing the empty shell rate? The experiment was conducted to clarify this issue. Experimental procedure