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铁岭县平顶堡镇、催阵堡乡两个农科站,在铁岭县科委、铁岭市农科所科技人员指导下,从1988年起,首先开展了稻田以水带氮施肥技术的研究与应用。通过3年100多个小区对比试验及大面积示范,基本摸清了不同肥料、不同带氮次数、不同带氮方法的以水带氮施肥技术的增产规律。在试验研究的基础上,1990年这两个乡镇开展了大面积应用,面积达1.57万亩。秋后经23个点的对比调查,以水带氮施肥田块,平均亩产643.3公斤,对照田(常规水层追肥)平均亩产590.6公斤,前者比后者平均每亩增产52.7公斤,增产率为8.9％。除此而外,以水带氮追肥法具有明显的节水效果,节水率平均在10％以上。
Under the direction of Tieling County Science and Technology Commission and Tieling Academy of Agricultural Sciences, since 1988, Tieling County Pingdingshan Township has been the first to carry out research on water-nitrogen fertilization in paddy fields. With application. Through three years of more than 100 plot comparative experiments and a large area demonstration, the basic find out different fertilizers, with different N times, with different methods of nitrogen in water with nitrogen fertilizer application of yield laws. On the basis of experimental studies, the two townships and towns carried out large-scale applications in 1990 with an area of 15,700 mu. Comparison of 23 points after the autumn of the survey to water with nitrogen fertilizer plots, the average yield of 643.3 kilograms, the control field (conventional top layer of water) per mu yield of 590.6 kg, the former than the latter an average yield of 52.7 kg per mu, yield The rate is 8.9%. In addition, the water with nitrogen fertilizer method has obvious water-saving effect, the average water-saving rate of 10% or more.