论文部分内容阅读
稻田养鱼要获得好效益,必须解决好水稻病虫害防治的用药问题。在使用农药时,必须选对农药。不同农药对鱼类具有不同的毒害,不能简单地以农药时人畜的毒性来推测其时鱼类毒性的大小。同一种农药对不同鱼类的毒性也不尽相同。如淡水白鲳及某些鲈形目鱼类(鳜鱼、加州鲈等)对有机磷农药特别敏感,在稻田中养这些品种时,就不能使用敌百虫、敌敌畏等有机磷农药;而四大家鱼对这类衣药的耐受性则相对较强同一农药同一浓度,使用方法不同,对鱼类的影响也不
In order to obtain good benefits in paddy field fish culture, we must solve the problem of drug use in prevention and control of rice pests. When using pesticides, pesticides must be selected. Different pesticides on fish have different toxicities, can not simply be the toxicity of livestock and poultry to speculate when the size of fish toxicity. The same kind of pesticides on different fish toxicity are not the same. Such as freshwater pomfret and some perciforms (catfish, California bass, etc.) are particularly sensitive to organophosphorus pesticides. When these breeds are raised in paddy fields, organophosphorus pesticides such as trichlorfon and dichlorvos can not be used. However, Fish are relatively resistant to these types of drugs are relatively strong the same concentration of the same pesticide, the use of different methods, the impact on the fish nor