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已读[114] 发布: 2013/10/21 05:06:50
防治稻飞虱的药剂主要有这么几种,一种是常用药剂,如吡呀酮、噻嗪酮,这类药管的时间比较长,但是速效性比较差;速效药剂主要有烯啶虫胺、中鼎威、异丙威。现在...
已读[271] 发布: 2013/10/21 05:06:46
最后,南旱北涝的极端气候将加快农药产业结构的调整,一些品种的农药用量将会增加,包括用于防治稻飞虱的吡蚜酮、毒死蜱、噻嗪酮、异丙威等,用来防治水稻纹枯病的丙...
已读[107] 发布: 2013/10/21 05:06:23
指导农户正确使用化学药剂进行防治,1)稻飞虱:宜选用吡蚜酮、醚菊酯、异丙威、吡虫啉、噻嗪酮等兑水喷雾。2)二化螟、稻纵卷叶螟:宜选用氯虫苯甲酰胺(康宽)兑水...
已读[94] 发布: 2013/10/21 05:05:50
移栽定植时,要选用经过药剂防治的无虫卵苗,可在定植前采用25%噻虫嗪水分散粒...噻嗪酮乳油,或亩用10~12.5克 25%噻虫嗪水分散粒剂喷雾防治。...
已读[121] 发布: 2013/10/21 04:12:20
CHEMIE TECHNIK online Die Ineos-Gruppe in Rolle, Schweiz, und die chinesische Sinopec Yangzi Petrochemical (Sinopec YPC ) haben mit dem Bau der größten Phenol - und Aceton-Anlage Chinas in Nanjing begonnen. Beide Unternehmen haben dazu ein  ...
已读[114] 发布: 2013/10/21 04:12:08
Wildlife News Polish chemists have just released details of a new way to deal with the cellulose and phenol pollution that comes from the industry. By adding a cheap and easy to manufacture catalyst, the Sun will do the decontamination. The chemists from the ... and more »
已读[121] 发布: 2013/10/21 04:12:03
TheHorse.com Phenolic compounds, recognized by the "- phenol " or "-phenate" at the end of the active ingredient names, will kill rotavirus, Salmonella, R. equi, and other equine pathogens in the presence of organic matter (see disinfectant protocol sidebar page 76).
已读[124] 发布: 2013/10/21 04:11:57
Phys.Org Made of iron or chromium doped titanium dioxide, silica or zeolite supported photocatalysts from the Institute of Physical Chemistry of the Polish Academy of Sciences in Warsaw effectively clean water contaminated with phenol and cellulose. The picture  ... and more »
已读[223] 发布: 2013/10/21 04:11:52
Richmond Times Dispatch Resol beads are disclosed that are prepared in high yield by reaction of a phenol with an aldehyde, with a base as catalyst, a colloidal stabilizer, and optionally a surfactant. The resol beads have a variety of uses, and may be thermally treated and ...
已读[234] 发布: 2013/10/21 04:11:46
PenBayPilot.com In a statement Friday, Hannaford Supermarkets said a compounding agent was accidentally spilled in the pharmacy during an inventory process. A representa...
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