Disease of animal and vegetable pests propagate with extreme rapidity.
动植物病害传播极快。
Extractives extracted with different methods from castor seeds were tested for the toxicity on vegetable pests.
采用不同提取方法从蓖麻籽中提取各种成分用于蔬菜害虫的杀虫试验。
The life cycle and movement rule of familiar vegetable pests were investigated. The optimal control period was brought forward based on the developing and movement rule of the pests.
调查研究了常见蔬菜害虫的生活史、昼夜活动规律，根据害虫发育情况和活动规律提出了最佳防治时期。
There were 40 species of pests and 5 species of detrimental animals on vegetable inNanning suburb.
明确南宁市郊蔬菜基地叶菜上发生的害虫40种，有害动物5种；
Multiple cropping vegetable and rice can improve soil utilization rate reduce plant diseases and insect pests and prevent soil stalinization in protective field.
稻菜复种可以提高土地利用率、少蔬菜的病虫害、止保护地内土壤的盐渍化。
Studies on the insecticidal activity of extract of Ricinus communis L. against insect pests were carried out in vegetable crops.
用蓖麻提取物对蔬菜重要害虫进行了杀虫活性研究。
Pyrethroid pesticides are mainly used in killing pests in cotton, vegetable, fruit and tea trees, public health and also in killing parasites in fish.
拟除虫菊酯杀虫剂主要用于防治棉田、菜地、果树和茶叶上的农业害虫以及卫生害虫，也用于渔业生产上杀灭寄生虫。
Multiple cropping vegetable and rice can improve soil utilization rate, reduce plant diseases and insect pests and prevent soil Stalinization in protective field.
稻菜复种可以提高土地利用率、减少蔬菜的病虫害、防止保护地内土壤的盐渍化。
They are highly destructive insect pests that can cause extensive damage to fruit and vegetable crops, trees, shrubs and turf grasses.
它们是具高度破坏力的害虫，会对蔬果作物，树木，灌木以及草坪造成重大损害。
They are highly destructive insect pests that can cause extensive damage to fruit and vegetable crops, trees, shrubs and turf grasses.
它们是具高度破坏力的害虫，会对蔬果作物，树木，灌木以及草坪造成重大损害。
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