浅埋滴灌土壤水分变化特征及作物耗水规律
作者:
作者单位:

作者简介:

张洁(1984-),女,内蒙古乌兰察布人,硕士研究生,主要从事节水灌溉理论与技术研究。E-mail:zj@yau.edu.cn

通讯作者:

中图分类号:

基金项目:

国家自然科学基金项目(42107379);陕西省科学技术厅项目(2023JCYB449);通辽市科技计划项目(TLYF2021004)


Study on Characteristics of Soil Water Change and Law of Crop Water Consumption Under Shallow Buried Drip Irrigation
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    为探明玉米节水增粮的浅埋滴灌灌溉模式,于2021年在内蒙古通辽市开展田间种植试验。按作物各生育期设置低水(W1=125.4 mm)、中水(W2=153.6 mm)、高水(W3=166.8 mm)不同定额灌水水平,以滴灌100%水量为对照(CK=179.8 mm),分析不同处理下土壤水分变化特征及对作物耗水量、水分利用率及植株生长的影响。结果表明:0-60 cm耕作土层土壤含水率随灌水量增加而变化明显;随着生育期的推进,在拔节期至灌浆期,土壤含水量均呈下降趋势。玉米作物耗水量整体存在差异,表现为CK>W3>W2>W1。玉米生长特征变化趋势差异较大,W2处理的株高、茎粗和叶面积指数最高;各生育期玉米耗水量总体变化呈波动变化趋势,在拔节期-抽雄期达到峰值。玉米产量不随灌水量增大而增加,处理W2玉米产量最高,较CK处理增产5.65 %,且水分利用率最大,为3.48 kg/m3。在进一步优化节水技术之前,浅埋滴灌W2处理为灌水最佳方案。研究结果可为我国半干旱地区玉米节水灌溉提供参考。

    Abstract:

    In order to find out the shallow buried drip irrigation mode of saving water and increasing grain yield of maize, field planting experiments were carried out in Tongliao City, Inner Mongolia in 2021. Based on different irrigation levels of low water (W1=125.4 mm), medium water (W2=153.6 mm) and high water (W3=166.8 mm), as well as 100% water volume of drip irrigation as control (CK=179.8 mm), the characteristics of soil water change under different treatments and their effects on crop water consumption, water use efficiency and plant growth were analyzed. The results showed that the water content of 0-60 cm cultivated soil changed significantly with the increase of irrigation water; With the development of the growth period, the soil water content decreased from jointing stage to filling stage; The water consumption of corn crops is different as a whole, as CK >W3 >W2 >W1; The variation trend of maize growth characteristics was quite different, and W2 treatment had the highest plant height, stem diameter and leaf area index; The overall change of water consumption of maize in each growth period showed a fluctuating trend, reaching the peak in JT growth period; The yield of maize did not increase with the increase of irrigation amount. The yield of maize in W2 treatment was the highest, 5.65% higher than that in CK treatment, and the water use efficiency was the highest, 3.48 kg/m3. Before further optimizing water-saving technology and membrane pollution, W2 treatment of shallow buried drip irrigation may be the appropriate method for farmers. The research results can provide reference for water-saving irrigation of corn in semi-arid areas of China.

    参考文献
    相似文献
    引证文献
引用本文

张洁, 马鹏飞, 吴素利, 李生众, 李敏, 朱永华, 邢英英.浅埋滴灌土壤水分变化特征及作物耗水规律[J].水土保持学报,2023,37(6):111~118

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2023-04-03
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2023-12-27
  • 出版日期: 2023-12-28