The relationship between vapor pressure difference and rate of nutrient release from film coated controlledreleasefertilizer was discussed.
研究了水蒸气压差与包膜型控释肥料养分释放速率的关系。
2
The result showed: Among all examined fertilizers, the nutrient release rate of urea was the highest and that of controlledrelease nitrogen fertilizer was the lowest.
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；
3
However, the application of controlledreleasefertilizer is limited by its high cost and environmental pollution brought from membrane materials of synthesized polymer with low degradation.