它的优点是用量少、毒性低、持效期长。
Its main advantages are less dosage, low toxicity and long validity.
但由于现有剂型持效期短，限制了更大规模的应用，也给储存运输带来麻烦。
But the short residual effect of common Bti formulations limited the larger scale application in the field and brought up the inconvenience in. the transportation and storage as well.
田间试验结果表明，20%毒死蜱微胶囊悬浮剂对花生田蛴螬防效高，持效期长。
The results of field experiments showed that chlorpyrifos 20CS was very effective and had long persistent control on peanut grup .
目的探讨城镇市河流动水中蚊幼的防制对策，观察双硫磷颗粒剂的灭蚊效果和持效期。
Objective To study the mosquito larvae management strategy in Shanghai City stream river and the effect, long-lasting activity of abate granules against mosquito larvae.
本品高效、低毒、持效期长，无残留，对天敌、人、畜安全，是一种绿色无公害农药。
Our drug has high efficency. Low toxic. Long efficacy. and sure safety to natural enemies, human and livestock.
本品是生物制剂，具有防效高、渗透性好、持效期长的特点，并且低毒，对环境友好，对草坪安全。
This product is a biological agent, with anti-efficient permeability, Chi Xiaoqi long features, and low toxicity, environmentally friendly, safe on the lawn.
本品是生物制剂，具有防效高、渗透性好、持效期长的特点，并且低毒，对环境友好，对草坪安全。
This product is a biological agent, with anti-efficient permeability, Chi Xiaoqi long features, and low toxicity, environmentally friendly, safe on the lawn.
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