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黄厝尾、内畔大队等水稻高产单位科学种田的经验很多,其中最突出的是在施肥技术上,特别是巧施壮尾肥方面。下面我们仅就这个问题,谈谈一些看法和体会。一、重视后期营养的理论依据据有关试验材料,生产一千斤稻谷(包括稻草),需要吸收纯氮24.7斤、磷11.5斤、钾21.2斤。双季水稻从稻穗分化以后的吸收量占整个生育期吸收总量的比例是:氮63.6—77.7％,磷81.5—83.1％,钾78.1—79.5％,其中结实成熟分别为15—19％,24.5—36.7％,16.2—27.2％。这样大量的肥料,单靠前期肥和土壤的供给是不够的,所以必须在幼穗形成
Huang Cuowu, the brigade and other units inside the rice production of scientific farming experience a lot, the most prominent of which is fertilization technology, especially Qiao Zhuang tailings. Below we only talk about some opinions and experiences on this issue. First, attach importance to the theoretical basis for late nutrition According to the test materials, the production of a kilogram of rice (including straw), need to absorb 24.7 kg of pure nitrogen, 11.5 kg of phosphorus, potassium 21.2 kg. The percentage of double-cropping paddy rice after its differentiation from the panicle was: 63.6-77.7% of nitrogen, 81.5-83.1% of phosphorus and 78.1-79.5% of potassium, of which the maturity was 15-19% 24.5-36.7%, 16.2-27.2%. Such a large amount of fertilizer, relying on early-stage fertilizer and soil supply is not enough, it must be panicle formation