鱼藤酮

According to the characteristic that the isoflavonoids of Derris elliptica Benth have a distinctive absorption spectrum within the ultroviolet wave length range (210￣ 345 nm, 290￣305 nm), a new method for determining the total isoflavonoids in Derris elliptica Benth by Ultroviolet Spectrometry has been put forward.

根据鱼藤中异黄酮类化合物在紫外光210～245nm及290～305nm处具有吸收峰这一特性，提出了用紫外分光法测定鱼藤中异黄酮类总含量的方法。在300nm波长处，浓度低于6×2.618×10－3／mol·L－1时，测定了标准系列的吸光值，结果表明吸光值与浓度近乎直线相关，相关系数为0.9977；标准系列吸光值准确性高；加样回收率达99％以上；测定样品时，重现性好

The sublethal effects of 6 insecticides (imidacloprid, rotenone, fenvalerate, abamectin, pirimicarb and azadirachtin) on the green peach aphid Myzus persicae and its predatory natural enemy multicolored Asian ladybird Harmonia axyridis were determined from their biology, ecology and physiology for meeting the practical needs and coordinating the chemical and biological control.

为适应生产上的需要，协调运用化学防治与生物防治技术，本研究从生物学、生态学和生理学的层次上测定了吡虫啉、鱼藤酮、氰戊菊酯、阿维菌素、抗蚜威和印楝素6种杀虫剂对桃蚜及其捕食性天敌异色瓢虫的亚致死影响。

The CTCs were 233.53 and 737.55. The effect of tea saponin against citrus red mite was relatively poor, and the effective duration was also short in field tests.

结果表明，茶皂素单用对柑桔全爪螨的LC50为804.04 mg/ L，分别与鱼藤酮和托尔克混用，对这两种农药均有显著的增效作用，共毒系数分别为233.53和737.55。

The CTCs were 233.53 and 737.55. The effect of tea saponin against citrus red mite was relatively poor, and the effective duration was also short in field tests.

田间试验结果，茶皂素单用时对柑桔全爪螨的防效较差，且持效期很短，但加入到鱼藤酮和托尔克中使用，药效可提高20％左右，特别是对托尔克增效极明显。

Natural pyrethrins, rothenone, nicotine extract, bordelaise mix (Copper salts up to 3 kg of metallic ion-Cu), calcium hydroxide as a fungicide

自然除虫菊酯，鱼藤酮，烟碱提取物，波特雷斯混合物（相当于3kg的金属铜离子的铜盐），作为杀真菌剂的氢化钙。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。