秦王川灌区种植小麦对地表微环境的影响
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摘要
实验以小麦地和裸地为研究对象,通过测定揭示秦王川灌区种植小麦对地表微环境的影响.结果表明:小麦的盖度、高度和地上生物量随着生长期的延长均呈显著升高趋势(P<0.05);种植小麦可显著降低地表的日照强度、温度和土壤温度,同时提高地表湿度;相关分析显示,小麦的盖度与地表微环境相关指标间的相关性最强,即盖度对它们的影响最显著;回归分析显示,小麦盖度每提高1%,可使植被覆盖区的地表日照强度降低597lux,地表温度降低0.15℃,土壤温度降低0.086℃,而地表湿度提高0.40%.
Regard Triticum aestivum and bare land(CK) as research objects, and conducted the effects of planting spring wheat on ground surface microenvironment in Qinwangchuan irrigated regions, the results showed that with the extension of growing time, the cover, height and biomass of wheat all significantly increased(P<0.05). The sunshine intensity, temperature and soil temperature all significantly decreased, and the humidity significantly increased, when spring wheat was planted. Correlation analysis showed that the effects of vegetation cover on the indies of microenvironment was most. The regression analysis showed that for every 1% of increase in cover, the sunshine intensity, temperature and soil temperature of microenvironment decreased 597 lux, 0.15℃ and 0.086℃, while the humidity increased 0.40%, respectively.
Regard Triticum aestivum and bare land(CK) as research objects, and conducted the effects of planting spring wheat on ground surface microenvironment in Qinwangchuan irrigated regions, the results showed that with the extension of growing time, the cover, height and biomass of wheat all significantly increased(P<0.05). The sunshine intensity, temperature and soil temperature all significantly decreased, and the humidity significantly increased, when spring wheat was planted. Correlation analysis showed that the effects of vegetation cover on the indies of microenvironment was most. The regression analysis showed that for every 1% of increase in cover, the sunshine intensity, temperature and soil temperature of microenvironment decreased 597 lux, 0.15℃ and 0.086℃, while the humidity increased 0.40%, respectively.
引文
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[2]杨思存,车宗贤,王成宝,等.甘肃沿黄灌区土壤盐渍化特征及其成因[J].干旱区研究,2014,31(1):57-64.
[3]王少丽,高占义,郭庭天.灌区土壤盐渍化发展模拟预测与对策研究[J].灌溉排水学报,2006,25(1):71-76.
[4]蔺海明,贾恢先,张有福,等.毛苕子对次生盐碱地抑盐效应的研究[J].草业学报,2003,12(4):58-62.
[5]赵芸晨,秦嘉海.几种牧草对河西走廊盐渍化土壤改土培肥的效应研究[J].草业学报,2005,14(6):63-66.
[6]魏晓斌,王志锋,于洪柱,等.不同生长年限苜蓿对盐碱地土壤肥力的影响[J].草业科学,2013,30(10):1502-1507.
[7]李昂,吴应珍,马明广,等.西北地区种植甘草对土壤次生盐渍化的影响[J].水土保持通报,2016,36(6):18-23.
[8]李昂,吕正文,蔺海明,等.秦王川灌区不同绿色覆盖方式预防土壤次生盐渍化效应研究[J].草业科学,2008,25(10):20-24.
[9]李昂,张鸣,陈伟,等.西北干旱区甘草植被特征指标对土壤水、盐、有机质的直接和间接效应[J].甘肃高师学报,2017,22(6):25-30.
[10]缑倩倩,韩致文,屈建军,等.秦王川灌区农田土壤盐分离子特征分析[J].土壤,2014,46(1):100-106.
[11]Ang L,Kechang N,Guozhen D.Resource availability,species composition and sown density effects on productivity of experimental plant communities[J].Plant Soil,2011,344(1):77-186.
[12]李昂,张鸣,陈映全,等.西北风蚀区种植甘草对农田土壤质地及碳、氮含量的影响[J].水土保持学报,2016,30(5):286-290,296.
[13]张浩,李志华,何蛟涛,等.干旱区盐渍土形成和水盐运移机理[J].生物学通报,2011,46(4):10-12.
[14]李昂.生物措施防治土壤盐渍化的机理及研究进展[J].甘肃高师学报,2013,18(2):56-59.