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通过采用“3414”试验完全实施方案,研究水稻在肥料吸收、利用等方面的参数。结果表明:氮素对水稻产量的影响效应主要表现为增加有效穗;磷、钾肥对水稻产量的影响主要表现为增加实粒数和千粒重;氮、磷、钾合理配施对增加水稻产量有显著作用。不同试验点间氮肥的增产率、产出率和产投比的标准差较小,而磷、钾肥各指标的标准差较大,特别是磷肥较大。植株及稻谷中氮、磷、钾含量均以施肥区比不施区高,地上部分氮、磷、钾三元素的总吸收量均以最佳施肥区最高,缺磷、缺钾区次之,缺氮区较小,无肥区最小。
By using “3414” test full implementation of the program to study the rice fertilizer absorption, utilization and other parameters. The results showed that the effects of nitrogen on rice yield were mainly increased panicles. The effects of phosphorus and potassium fertilizers on the yield of rice mainly increased by solid particles and 1000-grain weight. Rational application of nitrogen, phosphorus and potassium could increase the yield of rice significantly effect. The standard deviations of yield, output rate and production / output ratio of nitrogen fertilizer were different among different test sites, but the standard deviations of each index of phosphorus and potassium fertilizer were larger, especially the phosphate fertilizer was larger. The contents of nitrogen, phosphorus and potassium in plants and rice were higher than those in no fertilization area. The total uptake amount of three elements of aboveground nitrogen, phosphorus and potassium was the highest in the best fertilization area, Nitrogen-deficient area is the smallest, fat-free area is the smallest.