The nutrient of C, N, P, K in rice straw buried by rotocultivator in deep soil layer released at a high rate and less remain than on surface soil.
运用机械将稻秸秆深施于水
内，秸秆中的碳、氮、磷、钾养分释放比秸秆面施速率高，
留量少。
The nutrient of C, N, P, K in rice straw buried by rotocultivator in deep soil layer released at a high rate and less remain than on surface soil.
运用机械将稻秸秆深施于水内，秸秆中的碳、氮、磷、钾养分释放比秸秆面施速率高，留量少。
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