营养生态肥对水稻产量、氮肥农学利用率及经济效益的影响

Effect of Nutrition Ecological Fertilizer on Rice Yield,Agronomic Nitrogen Use Efficiency and Economic Benefit

为生态肥在皖南地区水稻生产中推广应用提供科学依据,通过田间小区试验,研究不同营养生态肥处理对水稻产量、氮肥农学利用效率和经济效益的影响。结果表明,生态肥Ⅱ（基施生态肥追施尿素）能显著提高水稻的穗粒数和结实率,并且水稻产量最高,分别比其他2个施肥处理增产3.9%和3.1%,但是生态肥Ⅰ（一次性基施生态肥）的氮肥偏生产力和氮肥农学利用率最高,分别比其他2个施肥处理增加63.8%~91.8%和67.7%~77.1%。与复合肥处理和生态肥Ⅱ处理比,生态肥Ⅰ处理的净收入和产投比分别增加1.2%~4%和25.7%~46.5%,说明一次性基施生态肥能够达到水稻高产高效的目的。

Field experiment was conducted to study the effects of nutrition ecological fertilizer on rice yield, agronomic nitrogen use efficiency and economic benefit, in order to providing scientific evidence for the application of ecological fertilizer in rice production in southern Anhui. The results indicated that： the ecological fertilizer Ⅱ treatment（combination of ecological fertilizer as basal manure and urea as topdressing） could significantly increased grains per panicle, seed setting rate and rice yield. Compared with the other two treatments, the rice yield of the ecological fertilizer Ⅱ was increased by 3.9% and 3.1%, respectively. However, the partial factor productivity（PFPN） of applied N and agronomic nitrogen use efficiency（AEN） of the ecological fertilizer Ⅰ treatment（ecological fertilizer as basal manure and without topdressing） were significantly increased by 63.8%-91.8% and 67.7%-77.1% then the other two treatments respectively. Compared with compound fertilizer and ecological fertilizer Ⅱ, the net income and output-input ratio of ecological fertilizer Ⅰ were increased by 1.2%-4% and 25.7%-46.5%, respectively. It showed that single basal application of ecological fertilizer Ⅰ could achieve the goal of high yield and efficiency.