大豆重迎茬减产的原因及农艺对策研究——重迎茬大豆的根  

Study on the Reason Reducing Production of Soybeans Planted Continuously and the Way to Get More Output——The Roots of Soybeans Planted Continuously

作　　者：何志鸿[1] 刘忠堂[2] 韩晓增[3] 许艳丽[3] 祖伟[4] 贾新民[5] 

机构地区：[1]黑龙江省科学技术厅,哈尔滨150001 [2]国家大豆工程技术研究中心 [3]中国科学院东北地理与农业生态研究所,哈尔滨150040 [4]东北农业大学,哈尔滨150030 [5]黑龙江八一农垦大学,密山158308

出　　处：《黑龙江农业科学》2003年第6期1-4,共4页Heilongjiang Agricultural Sciences

基　　金：黑龙江省科技攻关重大项目(G94B05-04-01);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

摘　　要：通过本项试验研究发现,大豆重迎茬种植,根的生长、活力对于营养和水分的吸收能力以及对病虫害的抵抗能力都降低,通过调节根际微生态环境,可以促进根的生长,增强根的各种功能,从而提高产量。这一切都说明根的活力变化以及根对养分吸收能力与对不良环境抵抗能力的减弱是大豆重迎茬减产的重要原因。The result of experiments and investigation showed that: When the soybeans were planted continuously and alternately, some abilitiy of their roots were depressed. They were growth, energy, ability to absorb nutrition and water, and the ability of resistance to diseases and insect pests. It can advance growth and buildup function of roots and increase output of soybeans to accommodate micro-ecological environment around roots. All of these shown that the change of root energy and the root ability to absorb nutrition and the ability reduce of resistance to diseases and insect pests was an important reason to reduce output of soybeans planted continuously and alternately. 

关 键 词：大豆 重迎茬 产量 农艺性状 根系生长 根际微生态环境 根系活力 抗逆能力 

分 类 号：S565.1[农业科学—作物学]