夏季施用长效尿素好长效尿素是由普通尿素与脲酶抑制剂按一定比例混拌而成。脲酶抑制剂能抑制土壤中脲酶的活性，减缓尿素在土壤中转化速度，从而延长尿素肥效。夏季高温时，尿素施入土壤里２－３天就可以完成转化过程，增加氮素挥发损失，而施用长效尿素可以减少追肥次数... Long-term use of urea in summer long urea is a long-term urea and urease inhibitors by a certain percentage of mixing. Urease inhibitors can inhibit the urease activity in the soil, slow down the urea conversion rate in the soil, thereby extending urea fertilizer efficiency. Summer high temperature, urea applied to the soil in 2-3 days to complete the conversion process, increase nitrogen volatilization loss, and the application of long-acting urea can reduce the number of top dressing ...