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.
对聚合物硫包尿素(简称PSCU)产品的养分释放特性进行了试验研究。
Experiments and researches are carried out on the nutrient release characteristics of polymer-sulphur coated urea (PSCU).
IBDU的体外氨释放速度远比尿素慢，而与大豆饼相同。
In vitro ammonia release of IBDU was markedly slower than that of urea and similar to that of the-soybean meal.
实验结果表明：涂层中松香的含量及包膜量(膜厚)是影响包膜尿素养份释放速率的主要因素。
Experimental results indicate that the rosin content in the coating and film thickness are the main factors influencing the nutrient release rate of the encapsulated urea.
在一般的情况下，使用含尿素防冻剂的住宅，其墙体中氨释放完全大约需要10 ~32年。
Under general conditions, the complete emission of ammonia from the wall of residence where the antifreeze containing carbamide has been used needs about 10 ~ 32 years.
就石蜡-天然松香包膜尿素而言，包膜层中石蜡和天然松香的配比是影响石蜡-天然松香包膜尿素养分释放速率的重要因素。
For the paraffin wax -natural rosin coated urea, the ratio of paraffin wax to natural rosin is of major importance to the release rate.
以紫外分光光度法对控释尿素的释放规律进行了测定，结合大田试验考查了控释尿素的增产、节肥效果。
The releasing rules of controlled-release urea were investigated by fluorescence photometry method, also yield and fertilizer-saving effects in wheat fanning were examined.
控释尿素山于具有控制氮素释放的功能，其淋失过程主要发生在养分释放的高峰期。
CRU has the function of controlling nutrient release , so the leaching loss of CRU mainly took place at nutrient releasing peak period.
研究结果表明，研制的包膜尿素具有较好的缓释性能，并可以实现控制释放。
The result shows that the polymer-coated urea has excellent slow release property, it is capable to control the release rate of coated urea in the meantime.
结果表明：亲水性包膜尿素与非亲水性包膜尿素的释放情况有很大不同，不存在明显的滞后阶段；
The results showed that, there are differences between the(hydrophilic) coated urea release and the hydrophobic coated urea release, the lag stage did not occur in the processes of CCU release;
腐植酸尿素降低氨挥发量与其养分释放模式和形成的土壤环境密切相关。
The ammonia volatilization reduction of humic acid urea correlated significantly with its nutrient-release mode and soil ambient.
分析了松香与石蜡的配比、涂层量对包膜尿素养分释放速率的影响。
Also, the influences of the ratio of rosin to paraffin wax in coating, and of coating weight on the nutrient release rate were discussed.
分光光度法和数粒法测定不同释放天数的树脂包衣尿素溶出氮相关性均较好。
There are good correlated coefficient between the test by granular counted and the test by spectrophotometer.
分光光度法和数粒法测定不同释放天数的树脂包衣尿素溶出氮相关性均较好。
There are good correlated coefficient between the test by granular counted and the test by spectrophotometer.
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