root and knot

基本解释

The nematodes that limit sweetpotato production are sweetpotato root-knot and rot-knot nematode. The intergrated methods are used to control the disease in sweetpotato production.
甘薯生产上主要采用综合防治方法进行防治，其中选育抗病品种最为经济有效。
The main findings are as follows:1. Using greenhouse to culture and collect root-knot nematode second-stage juveniles (J2) that provided abundant nematodes materials for follow-up experiments.
主要研究结果如下：1。利用温室条件，改进高效培养和收集根结线虫J2幼虫的方法，为后续大规模使用线虫材料提供了保障。
Those diseases which had been formerly found but not identified in detail, such as tobacco Blank death, Black root rot, Wild fire, Angular spot and root-knot nematode were studied more thoroughly.
对过去虽有发现，但无详细鉴定的烟草低头黑病、烟草根黑腐病、烟草野火病、烟草角斑病、烟草根结线虫病等进行了研究。