新疆农业科学2017，Vol.54Issue(2)：343-351,9.DOI:10.6048/j.issn.1001-4330.2017.02.018
生物质炭输入对盐化灰漠土壤水分运移的影响
Effects Induced by Inputting Biochar into the Saliferous Gray Desert Soil on the Soil Moisture Movement
摘要
Abstract
[Objective] To study the effect of biomass carbon input on soil moisture vertical movement in chloride-sulfate saliferous gray desert soil.[Method]The study materials were gray desert soil in three salinization levels which level 1 was low salinization,level 2 was medium salinization and level 3 was high salinization.Under different percentages of biochar inputs before and through the dropwise add of ddH2O,the time-varying of wetting front and accumulative infiltration capacity were calculated and analyzed.[Result]The vertical migration distance and the cumulative infiltration rate of wetting front were significantly increased(P < 0.05)with the infiltration time of different biomass carbon inputs in each degree of saline soil.The soil moisture movement in level 2 and level 3 saliferous soil were hindered by the biomass carbon;when the input percentage of biomass carbon was less than 4％to level 1 saliferous soil,the soil moisture movement could be facilitated by the biomass carbon;The relationship of biomass carbon input percentage with accumulative infiltration capacity in these three salinization soil were negatively correlated;there was no found in the relationship of biomass carbon inputs percentage with the accumulative infiltration capacity of vertical depth of wetting front in different salinization soil.[Conclusion]The ratio of biomass carbon input,the degree of salinization and the interaction effect of the two have a significant impact on the infiltration efficiency and cumulative infiltration of soil water.The infiltration rate and infiltration amount to moderately saline soil were prominent.Low level input has a promoting effect on water transport in mildly saline soil and inhibitory effect on both cumulative infiltration rate and infiltration rate in severe saline soil.关键词
生物质炭/灰漠土盐化土壤/水分Key words
biochar/saliferous gray desert soil/soil moisture分类
农业科技引用本文复制引用
刘易,黄建,马彦茹,祁通,冯耀祖,孟阿静,王新勇..生物质炭输入对盐化灰漠土壤水分运移的影响[J].新疆农业科学,2017,54(2):343-351,9.基金项目
国家自然科学基金项目"生物质炭输入对新疆盐渍化土壤水盐运移的影响及生物学响应"(41361050) （41361050）
国家自然科学基金项目"滴灌条件下重盐渍化棉田土壤盐分淡化区形成机制及调控"(41461049) （41461049）
新疆农科院优秀青年科技人才基金项目"生物质炭输入对新疆盐渍化土壤水盐运移的影响"(xjnky-2013012) NFSC "Effects induced by inputting biochar into the saliferous gray desert soil on the soil moisture movement and its biological response" (41361050),NFSC "Desalination zone formation mechanism and regulation of cotton in heavily salinized soil under drip irrigation" (41461409) and the Youth Funds of Xinjiang Academy of Agricultural Sciences "Effects induced by inputting biochar into the saliferous gray desert soil on the soil moisture movement" (xjnky-2013012) （xjnky-2013012）
