| 大豆重迎茬减产的原因及农艺对策研究——大豆重迎茬减产的原因与机理(上) |
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| 引用本文： | 何志鸿,刘忠堂,许艳丽,韩晓增,何雪莹.大豆重迎茬减产的原因及农艺对策研究——大豆重迎茬减产的原因与机理(上)[J].大豆通报,2011(5):7-12. |
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| 作者姓名： | 何志鸿 刘忠堂 许艳丽 韩晓增 何雪莹 |
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| 作者单位： | 黑龙江省科技厅;国家大豆工程技术研究中心;黑龙江省农业科学院;中国科学院东北地理与农业生态研究所; |
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| 基金项目： | 黑龙江省科技攻关招标课题,主持人江修业;黑龙江省科技攻关重大项目(G94B05-04-01),主持人刘忠堂、何志鸿、江修业; 国家“九五”重中之重科技攻关课题“大豆大面积高产综合配套技术研究开发与示范”03专题(95-001-05-03)之01子专题,主持人刘忠堂、何志鸿、许艳丽/韩晓增 |
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| 摘 要： | 通过连续8年在黑龙江省6个生态区9个固定轮作场圃综合试验,试验区专项研究,框区、盆栽试验,实验室分析,以及大量的大面积生产调查,发现影响重迎茬大豆产量的主要因素有土壤病虫危害、根系分泌物、根茬腐解物、根际微生物及其分泌物、土壤养分以及植株对于养分的吸收利用,其中土壤病虫危害是最主要的影响因素。各种影响因素间有相互推进的作用,其中主要的起因是根茬腐解物的积累改变了根际土壤的微生态环境,进一步影响了重迎茬大豆根际土壤微生物区系的组成、加剧了病虫危害、降低了土壤养分的可利用性、减弱了植株对于土壤养分的吸收利用,影响了植株的生长发育,导致减产。
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| 关 键 词： | 大豆 重迎茬 减产原因 机理 |
Reasons of soybean yield reduction by continuous and alternate cropping and corresponding agronomic countermeasures—reasons and mechanism of yield reduction by continuous soybean |
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| He Zhihong,Liu Zhongtang,Xu Yanli,et al..Reasons of soybean yield reduction by continuous and alternate cropping and corresponding agronomic countermeasures—reasons and mechanism of yield reduction by continuous soybean[J].Soybean Bulletin,2011(5):7-12. |
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| Authors: | He Zhihong Liu Zhongtang Xu Yanli |
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| Institution: | He Zhihong,Liu Zhongtang,Xu Yanli,et al. |
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| Abstract: | In order to examine the reasons of yield reduction by continuous soybean and soybeans planted alternatively and thus corresponding practices to get more yield,an eight-year series of research were implemented since 1993.Nine rotations were established in 6 different ecological regions of Heilongjiang Province,and a great deal of field experiments,case study,pot experiment,and laboratory analysis were carried out.The result showed that the main reasons of yield reduction of continuous soybean and alternate s... |
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| Keywords: | Soybean Continuous and Alternate Planting Yield Reduction Mechanism |
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