摘要
为探索大豆合理轮作,找到适宜的前茬作物,经过2017、2018、2019年3年,设置大豆、小麦、马铃薯、玉米4种作物进行相应轮作,以大豆连作作为对照。在结荚期测定大豆的叶片含水率、根冠比和叶片重量,在收获期测量大豆的株高、百粒重和单位面积产量,并对大豆连作田年际间成苗率和产量进行分析。结果表明:小麦为最优前茬,玉米次之,然后是马铃薯,即禾谷类前茬优于阔叶类前茬。连作会导致大豆成苗率降低。连作玉米茬对大豆亦存在抑制作用。部分性状差异会随着轮作和连作年限增加而增大。大豆产量受气候影响波动较大。
In order to explore the reasonable rotation of soybean,find the applicable crop.In this experiment,soybean,wheat,potato and corn were rotated in 2017,2018 and 2019 three years,with soybean continuous cropping as the control.Leaf moisture content,root-cap ratio and leaf weight of soybean were determined during pod-bearing period.Plant height,100-grain weight and yield per unit area were measured at harvest time.The seedling rate and yield of soybean continuous cropping fields in different years were analyzed.The results showed that:wheat was the best previous crop,followed by corn and potato,the fore crop of cereal grains was better than the previous crop of broad-leaved grains.Soybean continuous cropping could lead to lower soybean emergence rate.Continuous cropping of corn also inhibited soybean production.The difference of some characters will increase with the increase of crop rotation and continuous cropping years.Soybean production fluctuates greatly under the influence of climate.
作者
马子竣
孙继英
汝甲荣
王怀鹏
刘玲玲
MA Zi-jun;SUN Ji-ying;RU Jia-rong;WANG Huai-peng;LIU Ling-ling(Keshan Branch of Heilongjiang Academy of Agricultural Sciences,Qiqihar 161606,China)
出处
《黑龙江农业科学》
2020年第4期7-10,共4页
Heilongjiang Agricultural Sciences
基金
黑龙江省农业科学院院级科研项目(2017ZC05)。
关键词
大豆
连作
轮作
不同茬口
成苗率
soybean
soybean continuous cropping
crop rotation
different stubbles
planting percent
