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利用塑料大棚培育对虾早茬苗的技术措施如下: 1.清池、进水、施肥 放苗前10—15天,用100×10~(-6)的漂白粉(或每亩施40kg)彻底清池消毒,并反复冲刷干净。2天后注入40—50厘米清洁的海水,至放苗时逐渐将池水注满。进水须经60目左右的尼龙筛网过滤。进水后向池中施5～10×10~(-6)的氮肥(硝酸钠、尿素等),繁殖基础生物饵料,为虾苗入池提供良好的生态环境。 2.放苗时间及放苗密度 放苗时间一般以3月下旬至4月上旬、大棚水温稳
The use of plastic shed cultivation of shrimp early stubble technical measures are as follows: 1 clear pool, influent, fertilization before 10-15 days Fangmiao, with 100 × 10 ~ (-6) bleach (or 40kg per acre) thoroughly Pool disinfection, and repeatedly washed clean. 2 days after the injection of 40-50 cm of clean water, to gradually fill the pond when filled with water. Water must be about 60 mesh nylon mesh filter. After infusing water, 5 to 10 × 10 -6 nitrogen fertilizers (sodium nitrate, urea, etc.) are applied to the pond to breed the basic biological bait and provide a good ecological environment for the shrimp into the pond. 2. Fangmiao time and Fangmiao density Fangmiao generally in late March to early April, the greenhouse temperature stable