秋季9～10月,天高气爽,气候宜人,平均水温在20℃左右,正是河蟹生长的最佳时机。这时期,大部分河蟹经过最后一次脱壳成为绿蟹,性腺发育趋于成熟,河蟹生命力强,摄食旺盛,生长迅速。据测定,秋天河蟹的摄食生长期虽只有一生的1/4,而增重却能提高50％～100％。为此,注意加强河蟹的秋季管理,是增加河蟹个体重量,增加产量,提高经济效益的有效途径。我地有经验 Autumn from September to October, awe-inspiring, pleasant weather, the average water temperature is about 20 ℃, it is the best time for crab growth. During this period, most of the crabs became the green crabs after the last husking. The gonadal development tended to be mature. The crabs had strong vitality, vigorous feeding and rapid growth. According to the determination, autumn crab feeding growth although only a quarter of life, but weight gain can increase 50% to 100%. To this end, pay attention to strengthen the autumn crab management, is to increase individual crab weight, increase production, improve economic efficiency of the effective way. I have experience