1.塘堰基肥施用(1)投施时间。每年11月下旬至次年2月底,以正冬最好。施用基肥后10～15天,水质转肥就可放养鱼种。(2)施用量。以3～11月养鱼的蓄水面积计算用肥,每667平方米水面施用猪、牛、羊、兔等畜粪肥250～300千克。(3)施用方法。冬季鱼塘干水期不能把全部基肥施下水,以免 1 pond basal fertilizer application (1) the implementation time. The end of November each year to the end of February the following year, the best winter. 10 to 15 days after the application of basal fertilizer, water quality fertilizer can stocking species. (2) Application amount. With 3 to 11 months of fish storage area calculation of fertilizer, water per 667 square meters pigs, cattle, sheep, rabbits and other livestock manure 250 to 300 kg. (3) Application method. Winter fish pond dry period can not be all basal fertilizer Shi Shui, lest