脲酶抑制剂氢醌提高尿素肥效的研究

• 作 者: 张志明 武冠云 李荣华 曹承绵 赵晓燕 刘铁镔 周礼恺
• 机 构: 中国科学院林业土壤研究所,中国科学院林业土壤研究所,中国科学院林业土壤研究所,中国科学院林业土壤研究所,中国科学院林业土壤研究所,中国科学院林业土壤研究所,中国科学院林业土壤研究所
• 出 处: 土壤通报
• 发表日期: 1987年05期
• 关键词: 氢醌 尿素 脲酶抑制剂 脲酶活性 作物体 抑制率 回归式 土壤脲酶 田间试验结果 环境质量

选用国产氢醌做为脲酶抑制剂.室内模拟、~(15)N示踪和田间试验结果表明,氢醌有抑制脲酶活性的效应;氢醌浓度从25ppm提高到200ppm,对脲酶活性抑制率有明显提高;抑制率(y)与时间(x)有显著负相关关系,其回归式为y=a-1nx;氮醌提高了小麦对尿素的利用率;用量增加,土壤中残留氮亦增.分析测定结果表明,作物体内和土壤中无氢醌残留,不致影响环境质量.播种前,氢醌与尿素混合一次深施,期中不追肥,玉米比对照增产11%左右.

The domestic hydroquinone was chosen as the urease inhibitor.The results of indoor simulation and ~ (15) N tracing and field experiments showed that hydroquinone inhibited the urease activity; the hydroquinone concentration increased from 25ppm to 200ppm, the inhibitory rate of urease activity was (Y) was negatively correlated with time (x), and the regression equation was y = a-1nx. Nitroquinone increased the utilization rate of wheat in wheat. With the increase of the amount of nitrogen, the residual nitrogen also increased. The results of the analysis indicated that no hydroquinone residues were found in the crop and in soil, which would not affect the quality of the environment. Before sowing, hydroquinone and urea were mixed thoroughly for one time without top dressing. Corn yield increased about 11% compared with the control.