1. Process for preparing pyridazinone derivatives, and insecticidal, acaricidal, nematicidal, fungicidal compositions.
达嗪酮衍生物的制备方法及其杀虫、杀螨，杀线虫，杀真菌组合物。
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2. Five strains with strong nematicidal activity were obtained in the analysis with the fermentation liquid extract of some isolates.
室内初步测定了部分菌株的发酵粗提液的杀线虫活性，获得五株杀线虫活性较强的菌株。
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3. Nematicidal activity of aloperine, cytisine, N methylcytisine and matrine was bioassayed by the agar medium method and the cotton ball method.
使用培养基法和棉球法测定了苦豆碱、野靛碱、甲基野靛碱、苦参碱对松材线虫的杀线活性。
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4. The extract rates of different solvents were obviously different, and it had a certain correlation to that of nematicidal activity of extracts of Xanthium sibiricum.
5. Meanwhile, nematicidal acitivities of 13 phytochemicals were also investigated, and the results would provide some theoretical basis for the research and development of friendly nematicides.
6. A hypothesis that nematicidal activity of quinolizidine alkaloids is mainly determined by types of functional group pair and types of functional group in their molecular structures was proposed.
7. A hypothesis that nematicidal activity of quinolizidine alkaloids is mainly determined by types of functional group pair and types of functional group in their molecular structures was proposed.
