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江苏昆山市是阳澄湖大闸蟹的主要产地,为保证扣蟹质量,日前,采用稻田培育扣蟹保证本地优质蟹种来源,稻蟹共作面积约150亩左右。主要技术如下。一、水稻种植稻种选择“寒优湘晴”。大棚育苗,稻种0.4千克/亩。4月底插秧前需2次上水泡田。泡田后下降到水盖田面3厘米左右,采取大垄双行技术,行距70厘米,穴距30厘米,每穴8~10株,10天发稞分孽后基本达到24株。翌年插秧前割除稻秆,轮换行距插秧。二、蟹苗放养蟹苗选择“长江1号”或“长江2号”大眼幼体,放养时间:5月10日左右。放养规格:14万~16万尾/千克。亩放养量:1.25~1.5千克,20万只。总放养量:45千克,600万只左右。
Kunshan City, Jiangsu Province is the main producing area of Yangcheng Lake hairy crabs. In order to ensure the quality of buckle crabs, a few days ago, the source of high quality crabs was guaranteed by paddy field cultivation. The main technique is as follows. First, rice planting rice seed selection “Han You Xiangqing ”. Shed nursery, rice 0.4 kg / mu. Before the end of April 2 times before planting seedlings on the water field. After soaking in the field, it drops to about 3 centimeters in water and covers about 70 centimeters with a distance of 30 centimeters. The hole distance is 30 centimeters, and 8 to 10 plants per hole. After 24 days, it basically reaches 24 in total. The following year cut off rice straw before planting, rotation spacing transplanting. Second, crab stocking selection crab “Yangtze River 1 ” or “Yangtze River 2 ” big eyed larvae, stocking time: May 10 or so. Stocking specifications: 140,000 ~ 160,000 / kg. Mu stocking: 1.25 to 1.5 kg, 200,000. Total stocking: 45 kg, 6 million or so.