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- Prevention experiments on pine caterpillars of spraying Bt biotic pesticides by plane 飞机喷洒苏特灵Bt生物杀虫剂防治松毛虫试验
- Biotic pesticide of viruses of insect 生物杀虫剂扩建项目
- biotic pesticides 生物杀虫剂
- CONTROL EFFECT OF SEVERAL BIOTIC PESTICIDE AGAINST DISEASED RICE 应用生物源农药防治水稻病害
- Fumigants are pesticides acting in gaseous phase. 熏蒸剂是以气体形式作用的农药。
- The fertility of the soil has been greatly improved by the use of pesticides. 土壤施用杀虫剂後肥力大增。
- Farmer Jones was a dyed-in-the-wool traditionalist; he would never use any modern pesticides. 农夫琼斯是一个顽固的传统主义者,他从不愿使用任何新式的农药。
- Most pesticides do not comply with this ideal. 大多数杀虫剂在这一点上都不完全理想。
- Many pesticides are highly toxic. 许多杀虫剂毒性很大。
- The crops are regularly sprayed with pesticides. 农作物定期喷洒杀虫剂。
- Any of various hydrocarbon pesticides, such as DDT, that contain chlorine. 有机氯一种含氯的碳氢化合物杀虫农药,如滴滴涕杀虫剂
- Keywords Bacillus thuringiensis;biotic pesticide;parasporal crystal;DaQu pest;poison; 苏云金杆菌;生物农药;伴孢晶体;大曲害虫;毒杀;
- Some people were poisoned by pesticides. 有些人农药中毒。
- Their spray pesticides, for their prayers. 为它们喷杀虫剂,为它们祈祷。
- Organophosphate pesticides poisoning. 有机磷农药中毒
- One of the most characteristic species in a biotic community. 在生物群落中最有特征的别类之一
- Also, some organic pesticides are harmful to lambs. 而且杀虫剂对羊羔也是有害的。
- New herbicides and pesticides were developed. 新型除草剂与杀虫剂得到开发。
- Residues of pesticides can build up in the soil. 残余的杀虫剂会在土壤中积淀起来。
- Data on the world production and use of pesticides is fragmentary. 世界上有关农药的生产和利用的材料是很分散的。