root and knot

基本解釋

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.
甘薯生產(chǎn)上主要采用綜合防治方法進行防治，其中選育抗病品種最為經(jīng)濟有效。
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.
主要研究結(jié)果如下：1。利用溫室條件，改進高效培養(yǎng)和收集根結(jié)線蟲J2幼蟲的方法，為后續(xù)大規(guī)模使用線蟲材料提供了保障。
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.
對過去雖有發(fā)現(xiàn)，但無詳細鑒定的煙草低頭黑病、煙草根黑腐病、煙草野火病、煙草角斑病、煙草根結(jié)線蟲病等進行了研究。