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我省水稻经历了使用单质氮肥 ,氮磷并用及 90年代氮磷钾肥配施的阶段 ,水稻产量也由 60年代的 3750 kg/ hm2发展到 90年代的 60 0 0 kg/ hm2 。随着品种、气候、肥种及栽培水平的变化 ,施肥方式也发生了变化。种类繁多的肥料也相应出现 ,其中以复合肥市场占有率最高。其原因是随着近年二胺的大量施用 ,我省稻田磷素营养较丰富 ,多数稻田施用氮磷钾营养元素的增产效应为 :N>P>K。复合肥中由于加入了钾元素所以有较好的增产效果。然而复合肥不完善的方面是 ,N、P、K比例固定 ,主要用于基肥 ,其他各生育期还要单独配肥才能满足水稻全生育期的养分需求 ,农户甚至农技站很难科学掌握平衡施肥的标准。结果或因某种养分不足造成减产 ,或因某种养分过剩造成低效 ,为改变这一弊病 ,我们将土壤测试 ,肥料试验研究与复混肥的产、供、技术指导集一身 ,将配方施肥技术物化成科技产品 ,研制了供应水稻全生育期营养的新型水稻 BB肥 ,经三年试验增产效果显著 ,经济效益好
The rice in our province experienced the use of simple nitrogen, nitrogen and phosphorus in combination with NPK fertilization in the 1990s. The rice yield also increased from 3750 kg / hm2 in the 1960s to 60 000 kg / hm2 in the 1990s. With the variety, climate, fertilizer and cultivation level changes, fertilization methods have also changed. A wide variety of fertilizers also appear, of which the highest share of the fertilizer market. The reason is that with the large amount of diamine applied in recent years, the phosphorus nutrition of paddy fields in our province is richer. The yield increasing effect of N, P and K nutrition elements in most paddy fields is: N> P> K. Compound fertilizer due to the addition of potassium so there is a better yield effect. However, the imperfect aspect of compound fertilizer is that the proportion of N, P and K is fixed, and it is mainly used for basal fertilizer. Other fertilizations in different growth stages can only meet the nutrient requirements during the whole growth period of rice. Balance fertilization standards. As a result, the production of fertilizers, fertilizers and technical guidance for soil testing, fertilizer testing and research and the production of fertilizers and fertilizers have been reduced as a result of reduced production due to insufficient nutrients or inefficiency caused by some excess nutrients. In order to change this shortcoming, The formula fertilizer technology into science and technology products, developed a supply of rice during the whole growth period of nutrition of new rice BB fertilizer, after three years of test yield significant effect, good economic returns