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试验在海拔300——750米的山区单季山垅稻田进行,冬季极端低温-2.6℃(水温0℃),10——12月亩投放7——9厘米冬片鱼种300——400尾,其中草鱼占85％。饲养150天,秋初和开春后投喂青饲料,冬季肥水过冬,深水区上空搭棚遮盖霜雪,谅蜇节气防治水霉病。从1990年秋至1991年春试验3140亩,亩产鱼41公斤,其中17.5厘米鱼种284尾(17.5公斤),亩产值446元、效益255元。本试验不影响来季稻谷生产,且有增产增值效益。
The experiment was carried out in paddy fields of single season shady rice in the mountain range of 300-750 meters above sea level. In winter, the temperature was extremely low at -2.6 ℃ (water temperature 0 ℃) and that at 10--12 months was 7--9 cm. , Of which grass carp accounted for 85%. Feeding for 150 days, feeding early spring and early spring after the green feed, winter fertilizer over winter, scaffolding over the deep water covered frost and snow, forgive me sting out prevention and control of watery mildew. From the autumn of 1990 to the spring of 1991, a total of 3140 mu of mu fish were produced, yielding 41 kilograms of fish per mu, including 284 fish (17.5 kilograms) of 17.5 centimeters of fish, an output value of 446 yuan per mu, and a profit of 255 yuan. This experiment does not affect the production of rice in the season, and it has the benefit of increasing production and increasing value.