长江中下游地区油菜N、P减施增效途径与模式研究  

Research on Measures and Models of N,P Efficiency Fertilizer in the Middle and Lower Yangtze River Region

作　　者：刘德林[1] 张建锋[2] 张乐平[1] 吴同斌[1] 

机构地区：[1]湖南省原子能农业应用研究所,湖南长沙410125 [2]中国农业科学院农业资源与农业区划研究所,北京100081

出　　处：《湖南农业科学》2009年第4期64-66,共3页Hunan Agricultural Sciences

基　　金：国家"973"项目资助(2007CB109308)

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。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.

关 键 词：油菜 不同肥料 施肥措施 减肥增效 

分 类 号：S147.3[农业科学—肥料学]