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在应用五氯酚钠浸杀法消灭水田钉螺时,不少地方是将药物放在粪桶内稀释后,再用粪勺均匀地泼洒在水田中。这个方法虽较灵活、方便,但只适宜于小面积的有螺水田,而对大面积的水田灭螺,则存在以下三方面的问题: 一、水田浸杀灭螺,主要是在高温季节的夏天,这时正是收割、插秧两头忙的关键时刻,如用此法对大面积的水田灭螺,需要大批的人力、物力,客观上存在一定困难。
In the application of pentachlorophenol sodium dip method to eliminate snails in the paddy field, many places are placed in the dung of medicine diluted, and then evenly sprinkle dredging spoon in paddy fields. Although this method is more flexible and convenient, it is only suitable for a small area of snail paddy field, and snail on a large area of paddy field, there are the following three aspects: First, paddy snail kill snails, mainly in the hot season In summer, it is the crucial moment when harvesting and transplanting are both busy at this time. If this method is used to kill snails on a large area of paddy fields, a large amount of manpower and material resources will be required and there are some objective difficulties.