Effect and economical benefit of controlled-release nitrogen fertilizer application on late rice in different basic fertility of paddy soils was studied.
探讨了不同肥力水平水稻土与水稻控释氮肥对晚稻的应用效应及经济效益。
The most suitable amount of fertilizer and maximum amount of K application and the estimation of economic benefit was listed in Table 8.
最适肥料用量和最大施肥量以及经济效益估计值列于表8。
The benefit of chemical fertilizer was decreased with excessive application.
化肥的大量施用，使化肥的效益降低。
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