首页|秸秆深埋配施硫酸铝对西辽河平原地区苏打盐碱土水盐运移的影响

秸秆深埋配施硫酸铝对西辽河平原地区苏打盐碱土水盐运移的影响

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
为探索秸秆深埋和硫酸铝改良剂配施交互作用对苏打盐碱地水盐运移的影响，在通辽市科尔沁左翼中旗开展覆膜滴灌下不同硫酸铝用量与秸秆深埋的田间试验，以甜菜为指示作物，常规处理为对照(CK)，在有无秸秆深埋(A、B)的条件下分别设置 4 水平硫酸铝添加量(30、60、90、120 g/m2)，揭示硫酸铝用量、秸秆深埋与土壤含水率、盐分的相关关系，提出覆膜滴灌及秸秆深埋下适宜的硫酸铝用量。结果显示，未添加秸秆处理中B3 处理 0～50 cm土体平均含水率最高(23。8%)，比CK高 8。2%，且平均含盐量最低(1。69 g/kg)，比CK低 12。6%;添加秸秆处理中A3 处理 0～50 cm土体平均含水率最高(26。6%)，比B3 处理高 2。8%，平均含盐量也最低(1。57 g/kg)，比B3 处理低 19%，且平均积盐率最低，比B3 处理降低 7。6%;A3 处理在 10～20 和20～30 cm处土壤含水率均显著高于B3 处理(P＜0。05)，在 0～10 和 20～30 cm处土壤含盐量较B3 处理显著降低(P＜0。05);A3 处理 0～30 cm各土层均有脱盐趋势，达到显著水平(P＜0。05)，平均脱盐率 11。5%;硫酸铝和秸秆深埋交互作用与土壤含水率呈极显著正相关(0。808)，与土壤含盐量呈显著负相关(-0。564)。秸秆深埋和硫酸铝改良剂综合作用可有效降低土壤pH值 0。53～0。94，缓解土壤碱化度 20。5%～21。9%。覆膜滴灌及秸秆深埋下硫酸铝用量在 72～104 g/m2 为适宜当地的推荐用量。研究结果可为西辽河平原地区盐碱土壤改良提供理论依据。
Effects of straw buried with aluminum sulfate on water and salt migration in sodic saline-alkali soil in West Liaohe Plain
In order to explore the effects of straw deep burying and aluminum sulfate modification combination on water and salt transport in soda saline-alkali soil,a field experiment was conducted in Kezuozhong Qi,Tongliao City,with beet as the indicator crop and the conventional treatment(CK)as the control.Four levels of aluminum sulfate supplemental levels(30,60,90,120 g/m2)were set up respectively under the condition of straw deep burial(A)or no straw(B),to reveal the relationship between aluminum sulfate dosage,straw deep burial and soil moisture content and salinity,and propose the appropriate aluminum sulfate dosage under mulched film drip irrigation and straw deep burial.The results showed that the average moisture content of 0-50 cm soil of B3 treatment was the highest(23.8%),which was 8.2%higher than that of CK,and the average salt content of B3 treatment was the lowest(1.69 g/kg),which was 12.6%lower than that of CK.In addition to straw,the average moisture content of 0-50 cm soil in A3 treatment was the highest(26.6%),which was 2.8%higher than that in B3 treatment,and the average salt content was the lowest(1.57 g/kg),which was 19%lower than that in B3 treatment,and the average salt content was the lowest,which was 7.6%lower than that in B3 treatment.The soil moisture content at 10-20 and 20-30 cm of A3 treatment was significantly higher than that in B3 treatment(P＜0.05),and the soil salt content at 0-10 and 20-30 cm was significantly lower than that in B3 treatment(P＜0.05).In the A3 treatment,the desalting trend of 0-30 cm soil layer was significant(P＜0.05),and the average desalting rate was 11.5%.The double effects of aluminum sulfate and straw were positively correlated with soil moisture content(0.808),and negatively correlated with soil salt content(-0.564).The combined effects of straw and aluminum sulfate conditioner could effectively reduce soil pH value by 0.53-0.94 and alleviate soil alkalinity by 20.5%-21.9%.72-104 g/m2 of aluminum sulfate under mulching drip irrigation and straw buried deep was the recommended dosage suitable for the local area.The results could provide theoretical basis for saline-alkali soil improvement in the West Liaohe Plain.

film-covered drip irrigationaluminum sulfatestraw deep-buriedsoda saline-alkali soilwater salt transport

陈希、杨树青、温晓雨、郭富强、付娆、马卫华、刘红霞

展开 >

内蒙古农业大学,内蒙古 呼和浩特 010018

内蒙古恒源水利工程有限公司,内蒙古呼和浩特 010010

内蒙古自治区农牧业生态与资源保护中心,内蒙古 呼和浩特 010010

覆膜滴灌 硫酸铝 秸秆深埋 苏打盐碱土 水盐运移

2024

10.11838/sfsc.1673-6257.23020

中国土壤与肥料
中国农业科学院农业资源与农业区划研究所 中国植物营养与肥料学会

中国土壤与肥料

CSTPCD北大核心
影响因子：1.197
ISSN：1673-6257
年,卷(期)：2024.(1)
  • 41