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多年来,7、8月份草鱼大规格鱼种紧缺已成规律,很多成鱼池塘因此不能适时足量放养,给成鱼生产带来不应有的损失。究其原因,首先是7月中旬后,汛期到来,各类坑塘、水库蓄水增加,水位上涨,淹没大量陆草,对草鱼种的需求量增大;其次,随着温度的上升,部分品种搭配欠妥的坑塘水草暴长,造成对草鱼种的需求量增加;第三,因为草鱼苗食性转化前的适口饵料难以解决,当年鱼苗培育达不到相应规模,造成大规模草鱼种紧缺,价格飞涨。
Over the years, July and August grass carp large-size species shortage has become a rule, many adult ponds and therefore can not be adequate stocking in time, resulting in adult fish production should not have the loss. The reason, first of all, after the mid-July, the arrival of the flood season, all kinds of pit ponds, reservoirs increased water level, rising water level, flooded a lot of land and grass, the demand for grass carp species increased; second, as the temperature rises, part of Third, because the diet of grass fishes before food conversion is difficult to solve, when the fry breeding can not reach the appropriate scale, resulting in shortage of large-scale grass carp species , The price soared.