摘要
大豆通过框栽试验,证明 NK 营养作底肥或追肥施用,生育期中植株体内NK 营养积累量高峰期为鼓粒期。氮积累量随钾营养的增加而增强,呈显著直线回归关系。所以,在大豆鼓粒期之前,应在施磷肥的基础上,再配合施用氮钾肥作底肥或花期追肥施用,方能促其营养生长和生殖生长,使植株增高,荚数增多,体内干物质积累量增加,从而提高大豆的产量并改善了品质。较对照增产17%～30%,比施磷肥增产10%～17%,蛋白质提高22%～26%,脂肪提高25%～41%.
The frame culture experiment with soybean showed that the accumulation peak of NK insoybean plants was full pod stage when NK were applied as basal dressing or top dressing.The amount of N accumulation was increased with the increasing of K nutrient,whichshowed a significant linear relationship.N K fertilizers should be applied as basal dressing oras top dressing at blooming stage on the basis of P fertilizer before full pod stage,so as topromote the vegetation growth and reproductive development of boybeans,increase theheight of the plants,the number of pods and the amount of dry matter accumulation.Hence,the soybean yield was increased and its quality was improved.The yield of NK treatment was17%～30% higher than that of CK and 10%～17% higher than that of applying.P fertilizeralone;the protein content was increased 22%～26% and fat content 25%～41%.
关键词
大豆
氮钾代谢
氮钾营养
高产效应
soybean
NK metabolism
NK nutrients
effect of high yield and quality
