[J].HEILONGJIANG AGRICULTURAL SCIENCES,2020,(04):7-10.[doi:10.11942/j.issn1002-2767.2020.04.0007]
不同茬口对大豆生长及产量的影响
- 文献标志码:
- A
- 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。
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备注/Memo
收稿日期：2019-12-16