Effect of swine manure application to soil nitrate leaching of paddy-upland rotation-A case study in the Yellow River irrigation area
YANG Shi-qi1,2, HAN Rui-Yun1, WANG Yong-sheng3, LI Ru-liang4, XIE Xiao-jun5, YANG Zheng-li1,2
1. Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
2. Key Laboratory of Agro-Environment and Climate Change, Ministry of Agricultural, Beijing 100081, China;
3. Synthesis Research Center of Chinese Ecosystem Research Network, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
4. Institute of Agricultural Resources and Environment, Ningxia Academy of Agro-Forestry Science, Yinchuan 750002;
5. College of Agronomy, Northwest A and F University, Yangling 712100, China
Water pollution is severe in Ningxia irrigation zone and water quality is classified as Inferior Category V in many of drainage ditches. The main pollutants are nitrate and ammonium. A 5-year swine manure application trial and nitrate leaching losses have been conducted. There are 3 treatments:traditional without manure (CK), traditional matched manure 4500 kg/hm2(T1) and traditional matched manure 9000 kg/hm2 (T2). Nitrate nitrogen leaching losses at 30, 60, 90cm soil layers have been measured by resin core method. The results indicate that swine manure application cannot obviously increase soil nitrate leaching losses at 30cm layer. Contrasting with CK (15.96±0.41) kg/hm2, T1 (16.85±0.40) kg/hm2 and T2 (17.01±0.46) kg/hm2 do not reach significant differences (P<0.05), the same result as at the 60cm layer. However there are significant differences between treatments and CK and no significant differences between T1 and T2 at 90cm layer. Manure application can increase soil organic matter and total nitrogen. SOM of T1 and T2 are increased 0.95 and 1.41g/kg, which are improved 7.50% and 11.13%. TN of T1 and T2 are increased 0.06 and 0.16 g/kg at 0~30cm layer, which are improved 7.72% and 22.04%. Manure application can increase crop yield, rice yield is increased 12.26%~11.55%, but also winter wheat yield is increased 9.32%~12.52%.
杨世琦, 韩瑞芸, 王永生, 刘汝亮, 谢晓军, 杨正礼. 猪粪还田对土壤硝态氮淋失的影响研究——以黄灌区稻旱轮作制为例[J]. 中国环境科学, 2016, 36(2): 492-499.
YANG Shi-qi, HAN Rui-Yun, WANG Yong-sheng, LI Ru-liang, XIE Xiao-jun, YANG Zheng-li. Effect of swine manure application to soil nitrate leaching of paddy-upland rotation-A case study in the Yellow River irrigation area. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(2): 492-499.
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