改良剂施用对硫酸盐型棉田产量及土壤盐渍化参数的影响
Effects of Acid-Base Balance Conditioner Application on Cotton Yield and Soil Salinization Parameters in Sulfate Saline Fields
李双君 1胡桂清 1张文太 1孟景怡1
作者信息
- 1. 新疆农业大学资源与环境学院/新疆土壤与植物生态过程自治区级重点实验室,新疆 乌鲁木齐 830052
- 折叠
摘要
探究施用酸碱平衡护理剂改良盐渍化棉田的效果与机制,为盐碱地改良和棉花稳产提供理论依据.本研究以新疆沙湾县硫酸盐型棉田为试验对象,于 2021-2022 年设置施用酸碱平衡护理剂和对照两个处理,监测0～20 cm土层土壤的电导率和pH值,测定棉花长势、产量和土壤盐分指标.结果表明:(1)相较于对照,酸碱平衡护理剂处理的棉花出苗率显著提高 4.93～6.13 个百分点.(2)2021、2022 年酸碱平衡护理剂处理籽棉产量分别为 5 210.06、6 815.43 kg/hm2,较对照显著提高 25.98%、8.87%.(3)2021 年酸碱平衡护理剂处理10～20 cm土层土壤钠吸附比值较对照降低 0.077,2022 年 0～10、10～20 cm土层土壤分别较对照降低 0.204、0.173.(4)土壤全盐变化量与SO2-4 变化量呈显著正相关(P<0.05)、与Na+变化量呈极显著正相关(P<0.01);籽棉产量变化量与单株成铃数变化量呈显著负相关(P<0.05),与土壤电导率变化量呈极显著负相关(P<0.01),与单铃重变化量呈极显著正相关(P<0.01).综上表明,硫酸盐型棉田施用酸碱平衡护理剂能够降低土壤盐分,提高籽棉产量.
Abstract
In order to investigate the effects and mechanisms of acid-base balance conditioner application on saline cotton field improving,and to provide theoretical bases for saline land improvement and stable cotton yield,two treatments as acid-base balance conditioner application and control were set in 2021-2022 in a sul-fate type cotton field in Shawan County,Xinjiang.The conductivity and pH of 0～20-cm soil layer were moni-tored,and the indexes of cotton growth,yield and soil salinity were measured.The results were as follows.(1)Compared with the control,the emergence rate of cotton treated with acid-base balance conditioner was significantly increased by 4.93～6.13 percent points.(2)The seed cotton yields of acid-base balance condi-tioner treatment in 2021 and 2022 were 5 210.06 and 6 815.43 kg/hm2,respectively,which were 25.98%and 8.87%higher than that of the control.(3)Sodium sorption ratio in 10～20-cm soil layer of the acid-base bal-ance conditioner treatment was reduced by 0.077 in 2021 compared with the control,while that was reduced by 0.204 and 0.173 in 0～10-cm and 10～20-cm soil layers respectively in 2022.(4)The change of soil total salt was significantly positively correlated with the change of SO2-4(P<0.05)and Na+(P<0.01).The change of seed cotton yield was significantly negatively correlated with the number of bells per plant(P<0.05)and the change of soil conductivity(P<0.01),but significantly positively correlated with single bell weight change(P<0.01).In conclusion,the application of acid-base balance conditioner in sulfate type cotton fields could reduce soil salinity and increase seed cotton yield.
关键词
酸碱平衡护理剂/硫酸盐型盐渍土/盐渍化参数/棉花/籽棉产量Key words
Acid-base balance conditioner/Sulfate type saline soil/Salinization parameters/Cotton/Seed cotton yield引用本文复制引用
基金项目
新疆维吾尔自治区二次引进项目(2022012)
新疆维吾尔自治区天山英才计划(2021259)
新疆维吾尔自治区三区科技人才项目(2023117)
出版年
2024
国家科技期刊平台
NSTL
万方数据