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夏、秋季节适当地追施化肥,少施有机肥,可使浮游生物保持适宜的密度和旺盛的生长状态。施肥时须注意以下几点: 一、适时。一般在5至
Appropriate fertilizer summer, autumn, less organic fertilizer, plankton can maintain the appropriate density and strong growth status. Fertilizer should pay attention to the following points: First, timely. Generally 5 to