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试验分析了15℃,25℃和35℃水培条件下6种包膜控释尿素的氮素释放特性,结果表明,6种包膜控释尿素均属温度调节型控释肥料,LPcodoH10,SRcodo180,JTcodo,MScodo120,Agroum和Huda80的初期溶出(3%)天数分别为63,50,17,5,0.4和0.4 d,后期溶出(80%)天数分别为148,267,160,110,35和78 d.6种包膜控释尿素的温度依存性(Q10)在1.4~2.8之间,其中,MScodo120大于2,而SRcodo180,JTcodo和Huda80均小于2.
The nitrogen release characteristics of six kinds of coated controlled release urea at 15 ℃, 25 ℃ and 35 ℃ were analyzed experimentally. The results showed that the six kinds of coated controlled release urea were controlled temperature controlled release fertilizers, LPcodoH10, SRcodo180 The initial dissolution (3%) days of JTcodo, MScodo120, Agroum and Huda80 were 63, 50, 17, 5, 0.4 and 0.4 days, respectively. The days of post-dissolution (80%) days were 148, 267, 160, 110, 35 and 78 d The temperature-dependent (Q10) of membrane-controlled release urea ranged from 1.4 to 2.8, with MScodo120 greater than 2 and SRcodo180, JTcodo and Huda80 both less than 2.