摘要
采用"3414"肥料试验方案设计田间小区试验,通过田间试验结果建立本地区水稻的肥料效应函数,获得土壤肥力中等水平的水稻最佳经济产量为642kg/667m2,氮、磷、钾肥最佳施用量是氮5kg/667m2,磷(P2O5)3kg/667m2,钾(K2O)4.5kg/667m2,氮:磷:钾比例为1.0:1.0:1.5。渝北区水稻生长发育所需氮、磷、钾三要素中氮肥对水稻产量作用大于磷钾肥。试验结果为渝北区水稻合理确定肥料品种、配比及数量提供了依据。
The ＂3414＂ field experiment on nitrogen, phosphorus and potassium fertilization were carried out in a rice field in Yubei of Chongqing. With the field test data, we established the fertilizer effect function of local paddy rice, analyzed and got this conclusion： to the rice with middle-level soil fertility, the best economic output was 642 kg/667 m^2; the best fertilization of nitrogen, phosphorus and potassium was： N 5 kg/667 m^2, P2O5 3 kg/667 m^2, K20 4.5 kg/667 m^2; the appropriate ratio between the three fertilizers was： N ： P2O5 ： K2O=1.0 ： 1.0 ： 1.5. Meanwhile, the experiment also indicated that nitrogenous fertilizer was the most remarkable than the phosphorus and potassium fertilizer in the three factors of impacting the rice growth. The results were useful in choosing variety of fertilizer, the ratio and suitable quantity.
出处
《中国农学通报》
CSCD
北大核心
2009年第6期155-158,共4页
Chinese Agricultural Science Bulletin
基金
2008年重庆市渝北区"测土配方施肥"(2008-54)
关键词
测土配方施肥
水稻
效果
soil-testing and fertilizer-applying prescription, paddy rice, effect
