南京农业大学学报2026，Vol.49Issue(2)：312-323,12.DOI:10.7685/jnau.202501005
耕作方式与灌溉定额对苏打盐碱土理化性质和玉米生长的影响
Effect of tillage practices and irrigation quotas on physico-chemical properties and maize growth in soda saline soils
摘要
Abstract
[Objectives]The paper aimed to solve the problem of soil sloughing and high salinization in the saline-alkaline land of Xiliaohe Plain,to explore the effect of subsoiling tillage and powder ridge tillage on the improvement of soda saline-alkaline soils under different irrigation quotas.[Methods]A 3-year(2020-2022)field experiment was carried out,with 3-year consecutive conventional rotary tillage as control(CK),two types of tillage(subsoiling tillage S,powder ridge F)alternating with conventional rotary tillage,and two types of irrigation quotas(2 100 m3·hm-2 W1,2 700 m3·hm-2 W2)for a total of five experimental treatments.The effects of different treatments on soil property structure,salinity content,and corn yield were analyzed.[Results]Deep pine and siltation significantly increased soil porosity,large water-stable aggregates(>0.25 mm)content,and both reached the maximum value under the FW2 treatment,and significantly decreased soil bulkiness,compactness,clayey meal(<0.053 mm)content,pH value,ESP,and total salinity,and both reached the minimum value under the FW2 treatment.In addition,increasing the irrigation quota could accelerate the salt leaching,reduce the salinity in the tillage layer,abate the saline barrier and improve the soil structure.Subsoiling tillage and powder ridge significantly increased the net photosynthetic rate,transpiration rate,seedling emergence rate,leaf area index,and dry matter mass per plant of maize,with the maximum increase of 42.0%in seedling emergence rate.Subsoiling tillage and powder ridge significantly increased maize ear length,number of grains per ear,100-grain weight,and yield.In addition,irrigation quota was positively correlated with maize yield and reached the maximum value at FW2,and maize yield increased by 39.5%to 41.9%in different treatments compared with CK.[Conclusions]In conclusion,subsoiling tillage and powder ridge could significantly reduce soil salinity,improve soil structure,promote maize growth,increase maize seedling emergence rate,and achieve high maize yield,and the best effect was achieved in the treatment of powder ridge with an irrigation quota of 2 700 m3·hm-2.关键词
深松/粉垄/灌溉定额/苏打盐碱土/玉米Key words
subsoiling tillage/powder ridge/irrigation quotas/soda saline soils/maize分类
农业科技引用本文复制引用
王本龙,周春生,李利荣,胡佩雷,海珍..耕作方式与灌溉定额对苏打盐碱土理化性质和玉米生长的影响[J].南京农业大学学报,2026,49(2):312-323,12.基金项目
国家自然科学基金联合基金项目(U23A2014) （U23A2014）
内蒙古自治区直属高校基本科研业务费项目(NCYWZ22009 （）
NCYWS23033) （）
内蒙古自治区农牧业厅项目(202076) （202076）
改性凹凸棒土与膨润土混施的沙化耕地治理关键技术研发与示范项目(2024HJGJ09) （2024HJGJ09）
内蒙古财经大学五大任务及乡村振兴项目(NCXWD2464,20240905XCZX) （NCXWD2464,20240905XCZX）
