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河蟹一般生活在水底,但有时也会爬出水面,在水草或岸边活动。如果秋大河蟹经常上岸,不论白天黑夜都不下水,养殖农户就要引起注意,要根据不同情况及时加以防治,否则,会影响河蟹成活率。 1.寻找食物 河蟹大多夜里摄食,由于饥饿,有时白天也上岸觅食。这类河蟹动作灵活、反应灵敏,见人就匆忙逃离下水,待人走后又爬上来,或在食台、水草处徘徊。对这类上岸的河蟹,养殖户要适当补喂少量饵
Crabs generally live underwater, but sometimes they climb out of the water and move on plants or on the shore. If the autumn crabs often go ashore, no matter the day and night without water, farming farmers will attract attention, according to different situations in a timely manner to prevent and control, otherwise, will affect the survival rate of crabs. 1. Finding food Crabs mostly eat at night, because of hunger, sometimes landing during the day to find food. Such crabs move agile, responsive, see people rush to flee into the water, when people walk up and then climbed, or in the food station, water plants at wandering. For such landed crabs, farmers should be appropriate to feed a small amount of bait