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尿素是池塘养殖中促进天然饵料生产的最佳肥料,易于浮游植物吸收和利用。为此泰国曼谷亚洲农业和食品工程研究所进行了两次试验。试验1将尿素溶解于30℃水温的池水中,测定出在自然光照条件下尿素-N的日分解率为303μg/L,而黑暗条件下尿素一N的日分解量仅为102μg/L。黑暗条件下水的总碱度下降,而自然光照下池水的总碱度增加。试验2进行了毒性试验,测定出24h
Urea is the best fertilizer to promote natural food production in pond culture and is easy to absorb and utilize by phytoplankton. To this end Bangkok, Thailand, Asia Institute of Agricultural and Food Engineering conducted two tests. In Experiment 1, urea was dissolved in water at a water temperature of 30 ° C, and the daily decomposition rate of urea-N was found to be 303 μg / L under natural light conditions, while the daily decomposition amount of urea-N under dark conditions was only 102 μg / L. The total alkalinity of water decreased under dark conditions, while the total alkalinity of water increased under natural light conditions. TEST 2 Toxicity tests were performed and measured for 24h