保氮增效剂调节氮肥施用量和利用率的研究 Ⅱ.保氮增效剂在小麦生产中的应用效果

Study on Ammonia-Fixing Synergist Regulating Fertilization Quantities and Utilization Ratio of Nitrigenous Fertilizer Ⅱ.Used Effects of Ammonia-Fixing Synergist in Cultivating A Wheat/

利用田间试验研究了氮肥与保氮增效剂共施的效应函数和保氮增效剂促进小麦省肥增产的比较效果。同的供氮水平,保氮增效剂均能改善小麦植株经济性状,促进籽粒增产,提高氮肥报酬和施肥利润。保氮增效剂用量为氮肥实物量的5%作小麦基肥,旱地增产45～52.5kg/亩,稻田增产54.5～74.5kg/亩,氮肥报酬提高41.4～68.6%。

This paper deals with the effect function of nitrogenous fertilizer and ammonia-fixing syn- ergist by using together,and the compare effect of ammonia-fixing synergist increasing the wheat production and decreasing the usage of nitrogenous fertilizer.Under the different levels of nitrogenous application,ammonia-fixing synergist is able to make plant flourishing,increase seed weight,promote the reward and profit of the application of nitrogenous fertilizer.On using 5 portion of ammonia-fixing synergists and 100 portion of nitrogenous fertilizers as the base fer- tilizer,the wheat output goes up by 45-52.5kg/mu in dry farmland,54.5-74.5kg/mu in rice field,and the reward of nitrogenous fertilizer rises by 41.4-68.6%.