【摘要】 采用田间试验,研究水生植物堆肥替代部分氮肥对水稻产量及氮肥利用的影响。结果表明:与常规施肥(N100M0)相比,不同比例水生植物堆肥配施氮肥,水稻增产1.69%～5.56%,氮肥农学利用率增加2.83%～9.25%,氮肥偏生产力增加1.06%～3.48%。水生植物堆肥替代20%～60%氮肥,在宁夏引黄灌区能够保证水稻产量和氮肥利用,60%氮肥配施40%水生植物堆肥(N60M40)是协调作物产量和环境安全的合理选择。更多还原

【Abstract】 The field experiment was conducted to evaluate the effects of combined applications of compost of aquatic plants and chemical fertilizers on rice yield and nitrogen utilization. The results showed that compared with the conventional chemical nitrogen(N100 M0), rice yield of aquatic plants compost treatments were increased from 1.69% to 5.56%, the AEN were increased from 2.83% to 9.25%, the PFPN were increased from 1.06% to 3.48%. Combined applications of 20%～60%compost of aquatic plants could ensure rice yield and nitrogen utilization. Applying N60 M40 could maintain rice yields while alleviating environmental pollution in Yellow River irrigation region of Ningxia.更多还原