| 何付丽;高同彬;闫春秀;赵长山.窄行平作密植大豆田杂草群落组成与发生特点[J].植物保护,2008,34(3):92-95. |
| 窄行平作密植大豆田杂草群落组成与发生特点 |
| Composition and occurrence characteristics of weed community in flat-planting narrow-row solid-seeded soybean fields |
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| DOI： |
| 中文关键词: 杂草群落组成 发生特点 窄行平作密植大豆田 |
| 英文关键词:weed community composition occurrence characteristics flat-planting narrow-row solid-seeded soybean fields |
| 基金项目: |
| 何付丽;高同彬;闫春秀;赵长山 |
| 东北农业大学农学院,哈尔滨 150030 |
| 摘要点击次数: 547 |
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| 中文摘要: |
| 通过W曲线五点取样法,调查窄行平作密植大豆田的杂草群落组成和发生特点。调查结果表明,窄行平作密植大豆田杂草群落组成复杂,为多种优势杂草群落,不同地区杂草群落组成不同;种群密度大,发生密度200株/m左右。发生特点表现为:杂草群落按逻辑斯蒂(Logistic)曲线模式增长;发生较集中,发生高峰期仅10 d左右;杂草发生高峰期比大豆出苗高峰期早4~5 d。 |
| 英文摘要: |
| Through W-sampling technique with 5 sampling points,the species composition and occurrence characteristics of weed community were investigated in flat-planting narrow-row solid-seeded soybean fields.The composition of weed community was complicated and diverse in different regions,and several dominant weeds were identified.The weed population density was about 200 plants/m2 in flat-planting narrow-row solid-seeded soybean fields.Weed community increased with the mode of Logistic curve.The peak period of weed occurrence was about 10 days,which was 4-5 days earlier than that of the soybean. |
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