杀虫的

And aphid. Results of mixed medicamental test showed, Matrine (1.8%) and avermectin(0.04%) had the best effect on killing pesticide and protecting leaves to Pieris rapae L.;Matrine(0.5%) and avermectin(0.2%) and Matrine(0.5%) and avermectin(0.25%) had the best effect to aphid, their LC50 is 0.08815mg/ml 0.07454mg/ml.

药剂混配试验结果表明：对菜青虫的试验中，1.8%苦参碱+0.04%齐螨素处理杀虫效果、保叶效果最佳；对蚜虫的试验中，0.5%苦参碱+0.2%齐螨素混剂处理，0.5%苦参碱+0.25%齐螨素混剂处理效果最佳，两者致死中浓度分别为：0.08815mg/ml、0.07454mg/ml。

Its main insecticidal active components were weak polar matter and mainly distributed in the polarity range of petroleum ether.

不同极性萃取物的活性比较得知，杀虫活性成分主要是酯溶性的弱极性物质，分布在石油醚所在极性范围内。

A nematicidal sesquiterpene was isolated from the ethyl acetate extract of Michelia hedyosperma Law according to bioassay-guided fractionation.

根据活性追踪分离，从香子含笑叶的乙酸乙酯提取物中分离纯化到一个杀线虫的倍半萜。

This muant strain also lost the ability of sporulation and production of crystal. At the same time, the production of ICPs is severely decreased by SDS-PAGE analysis.

该突变株也丧失了产生芽胞和晶体的能力，SDS-PAGE分析表明突变株G03的杀虫蛋白产量也非常低。

We Investigated the species of diseases and insect pests, species of natural enemies, distribution and dominant species in export vegetable bases in Shandong Province. Dynamics of main diseases and insect pests were studied.2. We investigated the main control technologies for diseases and insect pests, types and application methods of pesticides.3. Effects of crop varieties, fertilities and cultivation on diseases and insect pests, production and pesticide residues were examined.4. Control effects and application technologies of frequency trembler grid lamps, greenhouse ozone machine and insect-proof net were tested.5. By research, seven biological preparations and twelve chemical pesticides with high activity, low toxicity and low residue were screened.

主要结果如下：1查清了山东省出口蔬菜基地蔬菜病虫害发生种类，天敌种类、分布、并评价上风种；探明了主要病虫发生消长规律。2查清了山东省出口蔬菜基地目前病虫害防治的主要应用技术、施药种类及主要施药方式。3明确了作物品种、肥力、栽培方式等农业措施对病虫发生、产量和农残的影响。4明确了频振式杀虫灯、温室病害臭氧防治机、防虫网等物理措施防治效果及其应用技术。5通过实验，筛选出7种生物制剂和12种安全有效低毒低残留化学农药品种。

Objective］ The experiment aimed to explore the relation between structure of aconitine,aconitine derivatives and insecticide.

［目的］探讨中乌头碱及其衍生物的结构和杀虫活性的关系。

Cry8Ca2 protein encoded by the gene cry8Ca2 of Bacillus thuringiensis is a kind of insecticidal crystal protein with molecular mass of 130kDa.It is larvicidal to both Anomala corpulenta and A.exoleta .

cry8 Ca2基因是本实验室自行分离克隆的一种新型苏云金芽孢杆菌( Bacillus thuringiensis ，Bt)杀虫晶体蛋白基因，其表达130 kDa蛋白对铜绿异丽金龟和黄褐异丽金龟( A.exoleta )幼虫具有较高的活性。

Based on supercritical CO2 extraction technique and orthogonal experiment design,extraction condition of essential oil from Chenopodium ambrosioides were investigated.

采用超临界CO2萃取技术，应用正交设计方法，以萃取率为评价指标，优化土荆芥精油的提取工艺，并对土荆芥精油的杀虫活性进行初步研究。

Multi-bioinsecticidal-toxin BtA is a bioconjugation product with multiple acting-sites, formed by biochemical bond-linking reaction between two biotoxins, protoxin of Bacillus thuringiensis and Abamectin, through the amino and carboxyl conjugator EDC. The variation of pest susceptibility to Multi-bioinsecticidal-toxin BtA was evaluated by studying the decline and recovery of susceptibility of Plutella xylostella L.

多位点生物杀虫毒素BtA是通过氨基-羧基偶联剂EDC将两种生物毒素进行键合反应，形成的具有多个作用位点的生物藕合产物。

This may partially attribute to packaging an inclusion within the hydrophobic exosporium so as to keep the inclusion in the water where target larvae maybe actively feeding.

可能是因为芽胞在昆虫肠道内再次萌发，产生了其他致病因子，如肠毒素、溶血素等，与杀虫晶体蛋白协同作用；也可能是因为伴胞晶体受到疏水的芽胞外壁层保护而能在水中等一般伴胞晶体不容易存在的地方被易感昆虫摄食。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。