夏玉米应用长效尿素的效果及技术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。其原理是：脲酶抑制剂能适当地抑制土壤中脲酶的活性，以减缓对尿素的分解，使其分解释放的时间延长，进而达到延长和提高肥效使用。据有关资料，尿素和脲酶抑制剂按５０∶１的比例混... The effect of long-term urea and its application in summer maize The long-term urea is composed of ordinary urea and urease inhibitor mixed according to certain proportion. The principle is: Urease inhibitors can properly inhibit the activity of urease in the soil to slow the decomposition of urea, the decomposition of the release of the extension of time, thereby extending and improving fertilizer use. According to the information, urea and urease inhibitors by 50: 1 ratio ...