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7月份气温上升,池水温度随之逐渐升高,昼夜温差较小,此时为中国对虾生长的最适温期,对虾保持快速生长的势头。 1 养殖中期 1.1 水色 7月份池水多为黄绿色,透明度逐渐达到30～40 cm,此时应停止施肥,注意水色不宜太浓,最好是“肥水清”、“肥而不腻”。水色太浓表示池水营养丰富,藻类繁殖快,易变化.不易保持稳定。在光线良好的情况下,池水透明度以40～60cm为最佳。如果透明度低于30cm,在一周内虾就会出现黑鳃。当水色太浓时应加大换水量.同时应适当控制投饵量。 1.2 溶解氧对虾耗氧量增加,池水中的其它生物
In July, the air temperature increased, the temperature of the water gradually increased, and the temperature difference between day and night was small. At this time, the optimum temperature for the growth of P. shrimp was shown, and the shrimp maintained its rapid growth momentum. 1 Aquaculture Medium 1.1 Aqua In July, most of the pond water is yellow-green, and the transparency gradually reaches 30-40 cm. At this time, the fertilization should be stopped. Attention should be paid to aqua not too thick, preferably “fat and clear” and “fat but not greasy”. Water is too rich that the water is nutrient-rich, algae multiply fast, easy to change. Not easy to maintain stability. In good light conditions, the water transparency to 40 ~ 60cm for the best. If the transparency is less than 30 cm, shrimp will appear black gills in a week. When the water is too thick should increase the water change.At the same time should be appropriate to control the amount of feeding. Dissolved oxygen Prawn oxygen consumption increased, pool of other organisms