少耕留茬小麦间作玉米农田土壤温湿度关联性研究  

Correlation between soil temperature and moisture in wheat-maize intercropping systems combined with reduced tillage retaining stubble

作　　者：史倩倩[1,2] 于爱忠 冯福学 樊志龙 柴强 

机构地区：[1]甘肃省干旱生境作物学重点实验室 [2]甘肃农业大学资源与环境学院,甘肃兰州730070

出　　处：《甘肃农业大学学报》2015年第6期25-30,共6页Journal of Gansu Agricultural University

基　　金：国家自然科学基金(31360323);甘肃省杰出青年基金(111RJDA006);国家科技支撑计划(2012BAD14B10)

摘　　要：针对在间作模式中集成保护性耕作措施缺乏理论和实践依据的问题，以小麦间作玉米为研究对象，通过田间定位试验，探讨小麦25am立茬少耕对间作群体土壤温度与作物耗水量关系的影响，以期为建立新的间作节水技术体系提供依据．结果表明：与传统间作相比，在低、中、高灌水水平下，小麦立茬少耕间作群体的土壤含水量分别提高了2．8％、6．8％、9．9％，耗水量分别降低了2．9％、4．o％、0．9％，0～25am土层地温分别降低了0．5％、1．0％、3．9％．相关分析表明，耗水量与地温呈显著正相关关系，说明将立茬少耕覆盖技术集成到间作模式中，可通过适度降低地温达到减少耗水、提高土壤含水量的作用．According to the problem lacking theoretical and practical basis on conservation tillage integrated into the intereropping system, field experiment was conducted to investigate the relationship between soil temperature and water consumption in wheat-maize intercropping system under reduced tillage retaining 25 cm stubble mulch to provide the theoretical cropping technical system. The results showed that soil basis for establishing efficient water-saving-interwater content of wheat-maize intercropping cornbined with standing stubble with reduced tillage increased by 2. 8%, 6.8% and 9. 9% compared with con- ventional intercropping, respectively,water consumption decreased by 2. 9 %, 4. 0% and 0. 9 %, respectively,soil temperature at the depth of 0~25 cm decreased by 0. 5%, 1.0% and 3. 9%, respectively. Meanwhile,it has a significantly positive correlation relationship between water consumption and soil temperature. Water consumption was significantly actively related to soil temperature indicating the integration of standing stubble with reduced tillage to intercropping system can reduce water consumption and increase soil content by decreasing soil temperature.

关 键 词：立茬少耕 小麦间作玉米 耗水量 土壤温度 

分 类 号：S344.2[农业科学—作物栽培与耕作技术]