大豆重迎茬减产的原因及农艺对策研究——重迎茬大豆减产的主要原因  

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

作　　者：何志鸿[1] 刘忠堂[2] 许艳丽[3] 韩晓增[3] 

机构地区：[1]黑龙江省科技厅,哈尔滨150001 [2]国家大豆工程技术研究中心,哈尔滨150086 [3]中国科学院黑龙江农业现代化研究所,哈尔滨150040

出　　处：《黑龙江农业科学》2003年第2期1-4,共4页Heilongjiang Agricultural Sciences

基　　金：黑龙江省科技攻关招标课题;黑龙江省科技攻关重大项目 (G94B0 5 -0 4-0 1);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"0 3专题 ( 95 -0 0 1-0 5 -0 3)之 0 1子专题

摘　　要：通过连续 8年在全省 5个生态区 9个 9区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 ,发现根际土壤养分、根的吸收能力、根系分泌物、根茬腐解物、根际微生物都对重迎茬种植大豆产生一定的影响。经过化防措施防效试验、障碍因子累加试验、土壤灭菌试验、不同抗病虫品种对比试验等试验研究 ,结果表明 ,在对重迎茬大豆产生影响的诸多因素之中 ,根际土壤病虫的危害最大。尽管大豆重迎茬减产是多因子综合作用的结果 。The experiments had been carried out by 8 years in 9 rotation nurses with 9 plots and series of field experiments in 5 ecological regions of Heilongjiang Province since 1993. In the same time, the investigation was made in soybean fields. The result showed that: Harmfulness of diseases and pests in the soil around roots of soybeans planted continuously became more serious, and it was the most important in the facts to affect growth and development of soybeans planted continuously. When the funguses and pests of soil were killed, the output of continuous soybeans was not as low as that of rotation soybeans. Among the methods to control the production reduce of continuous soybeans, the best one was soil treatment and seed coat that could kill diseases and pests in soil. It is the main reason to reduce output of soybeans planted continuously, that diseases and pests in soil around roots become more serious

关 键 词：农艺对策 大豆 重迎茬 减产原因 

分 类 号：S565.1[农业科学—作物学]