摘要
长效尿素是氮肥新品种。通过1989、1990两年试验和大面积施用调查,发现长效尿素与普通尿素相比可抑制脲酶活性五十天左右,在施用前期,土壤脲酶活性低于对照区,尿素残余量高于对照,后期则相反,作物的叶绿素和氨基酸总量增加;增产效果明显,亩增产玉米40公斤,大豆10公斤,甜菜150公斤,亩纯增益分别为14.8,18.8和16.8元,经济效益显著。
The long-lasting urea is a new nitrogen fertilizer. It has been found that the long- lasting urea can inhibite urease activites about 50 days comparing with common urea under experiment and field practice investigations during the year of 1989 and 1990. Soil urease activities appear to be lower in the treatments then that in the CK, and the remainder amount of urea higher in the earlier crop growth season, however on the contrary in the later season. The chlorophy 11 and amino acid content in crops is increased by long-lasting urea application. The yield of corn is increased by 40 kg per mu, soybean 10 kg and surgar beet 150 kg, the pure profit is about 14.8, 18.8,and 16.8 yuan per mu respectively.
出处
《黑龙江八一农垦大学学报》
1992年第2期19-27,共9页
journal of heilongjiang bayi agricultural university
关键词
长效尿素
尿素
释氮
Long-lasting urea
Common urea
Urease activity
Increased crop yield measure.
