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多年来,人们对生育期较短的早、中稻和双季晚稻栽培,普遍认识到在其一生中宜取“前促、中控、后补”的两促一控模式:通过前期的早施肥、重施肥攻头,使叶色浓绿,达到早生快发,完成第一促;中期实行晒田,断水控肥,使叶色褪淡,完成一控而进入幼穗分化;晒田复水后,看苗酌施穗肥保尾,使叶色转青,完成第二促。近年由于施肥水平不断提高,特别是施用的氮素化肥大大增加,晒田已成为水稻增产的一项重要措施。
Over the years, the people of the shorter growing season of early, middle and late rice cultivation, it is generally recognized that in their lifetime should take “pre-promotion, control, after the fill,” the two promote a control mode: through the early fertilization , Heavy fertilizer to attack the head so that the leaf color dark green, fast hair to achieve early, to complete the first promotion; medium drying sun, water control fertilizers, so that leaf color faded to complete a control and into young panicle differentiation; Sha Tin rehydration, See Miao Zhuo Sui Po fat tail, the leaf color turn green, to complete the second promotion. In recent years, due to continuous improvement of fertilization levels, especially the application of nitrogen fertilizer greatly increased, Sha Tin has become an important measure for rice yield.