控制重茬大豆危害施肥技术优选  

Optimization of fertilizer application technique on controlling the harm of soybean continuous cropping

作　　者：陈桂华[1] 李春杰[2] 韩新华[2] 潘风娟[2] 陈海山[1] 张谦[1] 陈静[1] 许艳丽[2] 

机构地区：[1]黑龙江省巴彦县农业技术推广中心,巴彦151800 [2]中国科学院东北地理与农业生态研究所,哈尔滨150081

出　　处：《大豆通报》2007年第6期31-36,共6页Soybean Bulletin

基　　金：哈尔滨市科技攻关计划项目:"控制大豆重迎茬减产重大关键技术研究与示范"(项目编号:2006AA6AN031)

摘　　要：采用田间进行了重茬大豆施肥技术组合筛选,NPK不同组合可明显促进重茬大豆生长发育,主要表现在增加大豆株高、提高大豆地上和地下生长,增加干物质积累;NPK配合可促进大豆根瘤数量和重量的增加,N3P4K5+叶面肥在大豆分枝期(V5)、开花期(R2)和鼓粒期(R6)三个时期都明显增加大豆优质根瘤比率;NPK配合可增加大豆叶面积指数、生物产量和光合势,其中N3P4K5和N3P4K5+叶面肥对大豆生长发育促进作用最为明显,N3P4K5+叶面肥产量最高,较对照增产22.7%,增加了大豆有效荚数、单株粒数和单株粒重,各处理对大豆百粒重影响不大。The experiment was conducted to screen fertilizer combination in continuous cropping soybean field. Different NPK fertilizer combination can obviously promote soybean growth, which include increasing plant height, up and under ground growth, dry matter accumulation, leaf area index, biomass, leaf area duration and the number and weight of root nodules of soybean. The combination of N3 P4 Ks and N3 P4 K5 plus leaf fertilizer promoted the soybean growth better than other combinations. The combination of N3 P4 K5 plus leaf fertilizer markedly enhanced the ratio of high quality soybean root nodules at Vs, R2 and R6 stage. The soybean yield was maximal in the combination of N3 P4 K5 plus leaf fertilizer which increased soybean effective legume, grain number and weight of per plant and increasing yield 22.7% than control. Each treatment had little influence on soybean 100- seed weight.

关 键 词：大豆 重茬 施肥 

分 类 号：S565.106[农业科学—作物学]