毕节地区位于贵州省西北部,是边远落后的少数民族地区,近年来渔业生产取得了很大的发展,但由于基数低,又缺乏资金和技术,鱼产量很难满足市场的需要,五分之四的水产品靠四川邻近地区供给。我区的海拔平均150O米左右,气温低,日照时间短,在一定程度上制 Bijie Prefecture is located in the northwestern part of Guizhou Province and is a remote and backward ethnic minority area. In recent years, fishery production has made great progress. However, due to low base and lack of capital and technology, the yield of fish is hard to meet market needs. Four aquatic products are supplied in the immediate vicinity of Sichuan. My area’s average elevation of about 150O meters, low temperature, short sunshine time, to a certain extent, the system