摘要
采用尼龙网袋法直接覆盖及覆土还田,研究了生物耕作下不同蔬菜(玉米、芋艿、山芋以及毛豆)茎秆还田后的腐解速率,建立了不同蔬菜的腐解模型。结果表明,蔬菜茎秆还田后,腐解速率表现出先快后慢的特征;在试验期内,玉米、山芋、芋艿以及毛豆等4种蔬菜茎秆的腐解率依次达到73.8%、95.9%、99.2%和75.4%,T2处理(10 cm)显著高于T1(0 cm);提出了不同蔬菜茎秆残留量自然对数的天数回归方程,可以预测蔬菜茎秆还田的腐解期限。
The decomposition rate of straw returning of corn,taro,sweet potato and soybean were studied in fields using the method of nylon bag cover and soil cover,and the decomposition model of different vegetables was established.The results showed that the decomposition rate shows the characteristics of fast to slow after stalk returning during the test period,the decomposing rates of 4 vegetables stalk were 73.8% ,95.9% ,99.2% and75.4% Respectively.The decomposition rate of T2 treatment（10 cm） was significant higher than that of T1（0 cm）（P 〈0.05）.Different vegetable stalk residue amount of days of natural logarithm regression equation was put forward,and it could predict the decomposition period of vegetable straw returning.
出处
《上海农业学报》
CSCD
2015年第5期61-65,共5页
Acta Agriculturae Shanghai
基金
上海市农口青年成长项目[沪农青字(2014)第1-25号]
上海市长三角国内合作项目(14395810602)
上海市科技兴农推广项目[沪农科推字(2013)第4-1号]
国家科技支撑计划项目(2010BAK69B18)
上海市农业科技成果转化项目(133919N1400)
关键词
生物耕作
蔬菜茎秆还田
腐解率
Biological tillage
Vegetable stalk returning
Decomposition rate
