【作者】 付利波； 苏帆； 陈华； 洪丽芳；

【Author】 Fu Libo;Su Fan;Chen Hua;Hong Lifang;Soil and Fertilizer Institute, Yunnan Academy of Agricultural Sciences;

【机构】 云南省农科院土肥所；

【摘要】 通过在云南蚕豆—水稻轮作制水田上的平衡施肥试验结果表明,平衡施肥能显著提高蚕豆、水稻产量,增加经济效益。在氮、磷用量相同的情况下,施钾20公斤和施钾15公斤的处理与施钾10公斤和不施钾的处理相比差异显著,产量随施钾量增加而增加。同时平衡施肥能改善蚕豆、水稻品质,增施磷或钾后蚕豆的蛋白质、氨基酸、淀粉、碳水化合物和粗纤维均有不同程度的增加。合理增施磷、钾还可提高根瘤重量达50.28%以上,提高根瘤固氮量94.58%以上。更多还原

【Abstract】 Results from experiments of balanced fertilization in horsebean-rice rotation system in Yunnan province showed that balanced fertilization could significantly increase yield of horsebean and rice and also increase economic benefit. On the basis of same nitrogen and phosphorus application rate, application of 20 kg K₂O or 15 kg K₂O increased yield significantly higher than that of 10 kg K₂O application rate or without K. In addition, balanced fertilization could improve quality of horsebean and rice. Application of P and K increased the content of protein, amino acid, starch, carbohydrate and crude fiber. Rational application of P and K fertilizer could also increased the weight of root nodule of horsebean by more than 50.28%, and increased the amount of nitrogen fixation by more than 94.58%.更多还原