腐植酸尿素对水稻产量和氮肥利用率的影响

Effect of Applying Humic Acid Urea on Rice Yield and N Use Efficiency

为了验证腐植酸尿素产品的应用效果,在广东惠州开展了水稻田间效果验证试验。结果表明,腐植酸尿素较普通尿素平均增产10.4%;在施纯氮75和112.5 kg/hm^2水平下,腐植酸尿素可显著提高水稻产量;在施纯氮75、112.5、150 kg/hm^2水平下,腐植酸氮肥表观利用率和氮肥农学效率分别提高了3.7、8.2、5.8个百分点和45.1%、34.3%、78.0%。

In order to study the effect of humic acid urea on crops, experiment on rice was conducted in Huizhou city, Guangdong province. The result showed that compared to the urea treatment, the average rice grain yields were increased by 10.4% when applied humic acid urea, and rice yield ofhumic acid urea treatments were significantly higher under both the N 75 kg/hm2 and N 112.5 kg/hm2 levels of pure nitrogen. N apparent recovery and agronomic efficiency of humic acid urea treatment was increased by 3.7, 8.2, 5.8 percentage points and 45.1%, 34.3%, 78.0% higher than urea treatment respectively under the 75, 112.5 and 150 kg/hm2 levels of pure nitrogen.