摘要
控释氮肥作为一种新型肥料近年来影响不断扩大,但控释氮肥在黑龙江省水稻生产上的应用研究尚无报道。在黑龙江省中部黑土区对控释肥在水稻生产上的应用效果进行了研究,结果表明：控释尿素与普通尿素搭配施用,与等养分普通尿素比较,可使水稻增产7.3%～15.7%,提高氮肥利用率17.7%～25.5%。搭配比例以控释尿素占总氮量的30%～50%为好。
The effect of controlled release urea was extended ceaselessly now. But there＇s no report about it applied on rice-production in Heilongjiang province. The experiment of application effect on rice-production of controlled release urea was carried out in black soil area in the middle of Heilongjiang province. The results showed that mating with urea reasonably could increase the rice yield apparently, the range of increasing was 7.3%～15.7%. And could increase the nitrogen fertilizer utilization, the range of increasing was 17.7%～25.5%. The best ratio of controlled release urea was 30%～50% in total nitrogen fertilizer applied.
出处
《黑龙江农业科学》
2008年第5期63-64,67,共3页
Heilongjiang Agricultural Sciences
关键词
水稻
控释尿素
普通尿素
产量
氮肥利用率
rice
controlled release urea
urea
yield
nitrogen fertilizer utilization
