论文部分内容阅读
一、概述我库地处亚热带,年降雨量较多.水库集雨面积237平方公里,产水量丰富,年产水量1.7～4.6亿立方米.水库以灌溉为主,结合防洪、发电、因而水库中的储水滞留时间变化很大.以一年时间计算,水体交换次数在2～4次以上.水质较清瘦,且水位不稳定.水库养鱼,从实际山发,采用粗放经营方式,只投放鱼种,不投饵、不施肥,同时做好防逃、除野杂鱼和渔政管理、捕捞等措施.实践证明,水库鱼产量在一定范围内与鱼种投库量成正比.鱼种是水库渔业高产稳产的重要制约因素之一,保证投库量足质优的鱼种,便成为发展水库渔业的关键.
I. Overview My library is located in the subtropical area, with more annual rainfall.The reservoir rain catchment area of 237 square kilometers, rich in water production, with an annual output of 1.7 to 460 million cubic meters of water.The reservoir to irrigation, combined with flood control, power generation, and thus reservoir In a large change in the retention time of water storage.Over a year, the number of water exchanges in the 2 to 4 times or more water quality is relatively lean, and the water level is not stable.The reservoir fish, from the actual mountain, the extensive mode of operation, only Put fish species, do not feed, do not fertilize, at the same time do a good job of anti-fleeing, in addition to wild trash and fishery management, fishing and other measures.Practice has proved that the reservoir fish production within a certain range and fish species is proportional to the amount of investment. Species is one of the most important restrictive factors for high and stable production in reservoir fisheries. It is the key to develop reservoir fisheries to ensure that fish species with sufficient quality and quantity of inputs are available.