干旱区生态环境知识资源中心(Arid): 秸秆还田及施肥对小麦复种油菜农田土壤呼吸的影响

Arid

	秸秆还田及施肥对小麦复种油菜农田土壤呼吸的影响
其他题名	Effects of Crop Residue Returning to Field and Fertilizer Application on Soil Respiration in Wheat/rape Field
	何向南 1; 黄高宝2 ; 黄鹏 2
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2012
卷号	29 期号:6 页码:1003-1008
中文摘要	在甘肃省石羊河绿洲灌区连续3 a的小麦复种油菜田间定位试验的基础上,采用EGM-4密闭式土壤呼吸测量系统,测定了不同施肥水平和不同秸秆还田方式下小麦复种油菜农田的土壤呼吸速率。结果表明:在整个观测期内,土壤呼吸速率最高值出现在8月下旬(152.06~199.58 mg·m~(-2)·h~(-1)),最低值出现在10月中旬(12.67~19.01 mg·m~(-2)·h~(-1))。土壤呼吸速率日变化呈单峰曲线,最高值出现在12:00-14:00, 4:00左右达最低值;不同秸秆还田方式下,高茬收割免耕播种油菜的处理明显降低了土壤呼吸速率,且在秸秆处理后的油菜生育期内降低效果更加明显;不同施肥水平下,在N、P减量15%的情况下,土壤呼吸速率显著下降;各试验处理措施下,土壤呼吸速率与5cm和10cm土壤温度、30cm各层土壤含水量均呈极显著正相关,并且土壤呼吸速率与0~30cm土壤水分的相关性较土壤温度高;不同处理下土壤呼吸速率与土壤孔隙度基本上呈负相关,但是两者之间相关性并不显著。
英文摘要	Based on the three-year field experiment in wheat/rape field in the Hexi Oasis Irrigation Area, the values of soil respiration rate were estimated with the EGM-4 soil respiration measurement system under different fertilizer application levels and ways and crop residue returning to field. The results showed that, throughout the observation period, the maximum value of soil respiration rate (152.06-199.58 mg·m~(-2)·h~(-1)) occurred in late August, and the minimum one (12.67-19.01 mg·m~(-2)·h~(-1)) occurred in mid-October. The curve of daily variation of soil respiration rate was unimodal, the maximum value occurred during the period of 12:00-14:00, and the minimum value appeared around 4:00. The soil respiration rate was significantly reduced under high crop stubble harvest without till, especially during the rape growth period. The soil respiration rate was significantly decreased under the different fertilizer application levels and in the case that N and P fertilizers were reduced by 15%. Under the treatment measures in the experiment, there was an extremely significant positive correlation between soil respiration rate and soil temperatures at soil layers of 5 cm and 10 cm in depth and also the soil moisture content at soil layer of 30 cm in depth. Furthermore, the correlation of soil respiration rate with soil moisture content in soil layer of 0-30 cm was higher than that with soil temperature. There was a negative correlation between soil respiration rate and soil porosity, but their correlation was not significant.
中文关键词	土壤呼吸速率 ; 小麦 ; 油菜 ; 施肥水平 ; 秸秆还田 ; 石羊河 ; 甘肃
英文关键词	soil respiration rate wheat rape fertilizer application level rop residue returning to field Shiyang River Gansu Province
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4692739
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228067
作者单位	1.甘肃农业大学资源与环境学院, 甘肃省干旱生境作物学重点实验室, 兰州, 甘肃 730070, 中国; 2.甘肃农业大学农学院, 甘肃省干旱生境作物学重点实验室, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	何向南,黄高宝,黄鹏. 秸秆还田及施肥对小麦复种油菜农田土壤呼吸的影响[J]. 甘肃农业大学,2012,29(6):1003-1008.
APA	何向南,黄高宝,&黄鹏.(2012).秸秆还田及施肥对小麦复种油菜农田土壤呼吸的影响.干旱区研究,29(6),1003-1008.
MLA	何向南,et al."秸秆还田及施肥对小麦复种油菜农田土壤呼吸的影响".干旱区研究 29.6(2012):1003-1008.