采用包膜控释氮肥在玉米上进行肥效试验研究。
The effects of coated controlled-release nitrogen fertilizer (CRNF) on corn yield increase are studied.
用控释氮肥（rn）为氮素管理的一项措施已不是新概念。
The concept of controlled-release nitrogen fertilizers( CRN) as a nitrogen management tool is not new.
本文研究了不同室内模拟试验条件下控释氮肥的养分释放特征。
The nutrient-release characteristics of controlled-release nitrogen fertilizers (CRNFs) under experimental conditions were studied by different simulated methods.
不同时期控释氮肥处理功能叶的净光合速率也均显著地高于尿素处理。
Photosynthetic rates of the functional leaves at different stages in CRNF treatment were significantly higher than those in urea treatment.
控释氮肥能显著降低土壤氨挥发量，减少因施肥而引起的大气环境污染。
Controlled-release fertilizers could markedly reduce total ammonia volatilization from soil and decrease environment pollution via fertilization.
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。
Effect and economical benefit of controlled-release nitrogen fertilizer application on late rice in different basic fertility of paddy soils was studied.
结果表明：在较低、中等和较高肥力稻田上，施用控释氮肥的增产效果和经济效益依次递减；
The results show that yield increase effect and economic benefit of controlled release N fertilizer application decrease in lower, medium and higher fertility paddy soils in proper order.
研究结果表明：控释氮肥养分释放速率最低、肥效最长，与尿素相比可改善运动场草坪的外观品质；
The result showed: Among all examined fertilizers, the nutrient release rate of urea was the highest and that of controlled release nitrogen fertilizer was the lowest.
采用小麦盆栽试验方法，进行了利用木质素作为尿素控释材料对作物生长作用和提高氮肥利用率的研究。
A pot experiment grown wheat in which lignin was used as a controlled-release material of urea, it was conducted to research the effects on growth and nitrogen-utilized effects of wheat.
采用小麦盆栽试验方法，进行了利用木质素作为尿素控释材料对作物生长作用和提高氮肥利用率的研究。
A pot experiment grown wheat in which lignin was used as a controlled-release material of urea, it was conducted to research the effects on growth and nitrogen-utilized effects of wheat.
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