摘要
研究了土壤温度和湿度对南方根结线虫侵染番茄根部能力的影响。结果表明,在42℃和-15℃处理3 d后可使二龄幼虫丧失侵染能力,在0℃、40℃和土壤含水量20.7%～36.2%时,可有效降低二龄幼虫的侵染能力;当土壤含水量较低时有利于二龄幼虫对番茄根部的侵染;当根结数量较多时根重显著增加,株高下降。
The effects of soil temperature and humidity on the infectivity of root-knot nematode （Meloidogyne incognita） to tomato root were investigated in this paper. The results showed that the second-stage juvenile could lost infectant ability at 42℃ or -15℃ in 3d in the soil. The next ideal condition to reduce effieiently the infectant ability of second-stage juvenile was at 0℃, 40℃ soil temperature and 20.7%-36.2% water content. The lower water content in soil would helpful to increase the infectant ability of second-stage juvenile. When the root-knot at high number, the root weight were significant increase and plant height reduced.
出处
《湖北农业科学》
北大核心
2009年第6期1375-1377,共3页
Hubei Agricultural Sciences
基金
霍英东青年教师基金(101033)
辽宁省优秀人才支持计划项目
科技部成果转化基金(05EFN212100059)
关键词
温湿度
南方根结线虫
侵染力
temperature and humidity
Meloidogyne incognita
infectivity
