【摘要】 在传统施肥的基础上,减少20%化学N、P肥料,通过增施20%的有机N、P肥或缓释肥,以及分次施N等措施发现,土壤中的速效N、P、K和植株中的全量N、P、K均高于传统施肥处理,其值以80%传统施肥量加20%有机N肥处理最高,并且籽粒产量增加7.2%～35.9%。随着生育期的延长,土壤中的速效养分及植株的全量养分逐渐降低,成熟后N、P养分大都储存在籽粒内,而K素营养则集中在茎杆内。更多还原

【Abstract】 On the base of traditional fertilization,it was 20% reduction in chemical N and P fertilizers,increasing 20% of organic nitrogen fertilizer or slow-release nitrogen fertilizer,as well as fertilized at different times.The results showed that soil available N,P,K and the total plant N,P,K were higher than conventional fertilizer,Traditional fertilizer organic nitrogen plus 20% was the highest,and increases grain yield of 7.2%～35.93%.With the extend of growing period,the readily available nutrient in soil and plant nutrients in the entire volume gradually decreased,the N,P nutrients were mostly stored in the grain,and the K nutrition was concentrated in the stem inside when they were ripe.更多还原