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本文总结了1985～1987年寒地水稻旱育稀植高产栽培施肥的技术。试验结果表明,水稻产量随施肥量的增加而增加,施肥量过高产量下降;水稻株高、有效分蘖、空秕率均随施肥量增加而增加。在适宜施肥水平,水稻茎秆直立无倒伏,在高肥水平茎秆有倾斜。增加氮肥比例,水稻株高和空秕率增加,千粒重降低;增加磷肥比例,空秕率降低,千粒重提高;降低钾肥比例,有效穗数和产量下降。
This article summarizes the 1985 ~ 1987 cold and dry cultivation of rice cultivation and fertilization technology. The results showed that the yield of rice increased with the increase of fertilizer application and the yield of over fertilized rice decreased. The plant height, effective tiller and emptying rate of rice increased with the increase of fertilizer application. In the appropriate fertilization level, rice stalks upright no lodging, tilted at high fat level stems. Increasing the proportion of nitrogen fertilizer increased the plant height and emptying rate of rice and reduced the 1000-grain weight. Increasing the proportion of phosphate fertilizer, reducing the emptying rate and increasing the 1000-grain weight reduced the proportion of potash, the effective panicles and the decrease of yield.