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确定好鱼种的投放数量,是获得池塘养鱼高效益的重要原因之一。笔者根据养鱼多年的体会和一些资料的介绍,认为应该着重考虑以下几个方面: 1.载鱼量。载鱼量是指一定时期内,单位面积水体承载鱼类的重量。通常考虑的是高温时期的载鱼量。一般认为,在高温时期,水深为2.5m时,每亩池塘的载鱼量应为400kg左右;以吃食性鱼类为主的池塘,每亩除鲢鳙鱼外,它们的载鱼量应为200kg左右。在水面较大,水体较深,水体交换容易或有增氧设备等条件下,可以加大载鱼量。 2.饵料来源。除刈割野生水旱草外,还应保证有一定面积的饲料地配置和购置精饲料,以保证鱼类的生长需要。在一定载鱼量内,饵料来源丰富,有保障的
Determine the number of good species of fish is one of the important reasons for the high efficiency of fish ponds. According to many years of experience of fish farming and some information, I think we should focus on the following aspects: 1. The amount of fish. The amount of fish carried means the weight of the fish carrying water per unit area over a period of time. The usual consideration is the amount of fish carried during high temperatures. Generally believed that in the high temperature period, when the depth of 2.5m, per mu of fish carrying capacity should be about 400kg; eatable fish ponds, in addition to silver carp per mu, their carrying capacity should be About 200kg. Larger water surface, deeper water, easy exchange of water or aerobic equipment and other conditions, you can increase the load of fish. 2. Food sources. In addition to cutting the wild water weeds, but also should ensure that a certain area of feed to configure and purchase of fine feed, in order to ensure the growth of fish needs. Within a certain amount of contained fish, the rich source of food, guaranteed