旱区有机肥替代氮肥对多年连作土壤理化性质和马铃薯品质的影响

胡新元, 柳永强, 谢奎忠, 孙小花, 罗爱花

Effects of Organic Fertilizer Replacing Nitrogen Fertilizer on Soil Physical Chemistry Properties and Potato Quality under Continuous Cropping in Arid Area

Hu Xinyuan, Liu Yongqiang, Xie Kuizhong, Sun Xiaohua, Luo Aihua

表3 有机肥替代氮肥对马铃薯连作土壤酶活性的影响

Table 3 Effects of organic fertilizer replacing nitrogen fertilizer on soil enzyme activity of potato continuous cropping

处理 Treatment 脲酶 Urease [NH3-N mg/(g·d)] 酸性蛋白酶 Acid protease (U/g) 碱性磷酸酶 Alkaline phosphatase (U/g) 过氧化氢酶 Catalase [0.1mol/L KMnO4 mL/(g·h)] 蔗糖酶 Sucrase [Glucose mg/(g·d)] CK 4308.0±245.1a 10.20±1.13c 13.81±2.21c 16.33±0.42a 0.32±0.02c NR15/C5 4033.5±102.4b 10.13±1.09c 14.08±1.65c 16.00±0.33a 0.34±0.02c NR30/C10 3917.7±221.4bc 12.30±0.79b 14.94±1.42bc 15.82±0.89a 0.34±0.02c NR45/C15 3812.8±97.0c 13.63±1.25ab 15.86±0.98b 16.45±0.85a 0.37±0.01b NR60/C20 3786.0±312.2c 15.07±0.62a 17.11±1.15a 15.42±0.63a 0.43±0.01a