Effects of PBAT on Soil Water and Salt in Maize Root Zone and Maize Yield in Saline-alkali Land

YANG Zhaoyu; WANG Jing; Lü Wen; SUN Haojie; REN Hongwu; MA Weiwei; HOU Jiana

doi:10.13870/j.cnki.stbcxb.2024.06.027

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Effects of PBAT on Soil Water and Salt in Maize Root Zone and Maize Yield in Saline-alkali Land

更新时间：2025-02-18

- Effects of PBAT on Soil Water and Salt in Maize Root Zone and Maize Yield in Saline-alkali Land
- Vol. 38, Issue 6, Pages: 343-351(2024)
- 作者机构：
  
  1. 宁夏大学生态环境学院,银川,750021
  2. 宁夏大学西北土地退化与生态系统恢复国家重点实验室培育基地,银川,750021
  3. 宁夏大学西北退化生态系统恢复与重建教育部重点实验室,银川,750021
  4. 宁夏回族自治区黄河水联网数字治水重点实验室,银川,750021
  5. 宁夏大学农学院,银川,750021
  6. 宁夏大学林业与草业学院,银川,750021
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2024.06.027
  CLC： X53
- Published：2024
- 稿件说明：
移动端阅览
YANG Zhaoyu, WANG Jing, Lü Wen, et al. Effects of PBAT on Soil Water and Salt in Maize Root Zone and Maize Yield in Saline-alkali Land[J]. 2024, 38(6): 343-351.
DOI：

YANG Zhaoyu, WANG Jing, Lü Wen, et al. Effects of PBAT on Soil Water and Salt in Maize Root Zone and Maize Yield in Saline-alkali Land[J]. 2024, 38(6): 343-351. DOI： 10.13870/j.cnki.stbcxb.2024.06.027.

摘要

[目的] 为减少地膜导致的农田土壤污染

探明使用PBAT全生物可降解地膜代替普通PE地膜与滴灌结合在轻度次生盐化土壤滴灌种植玉米的应用效果。[方法] 于2023年4—9月在宁夏惠农区设置PBAT全生物可降解地膜(黑色、白色)、普通PE地膜(黑色)和无覆盖种植4个处理

以及2 600

3 300

4 200 m3/hm2 3个灌水量

探讨不同膜覆盖对土壤水盐运移和玉米生长的影响。[结果] 在0—20 cm土层黑色、白色全生物降解地膜的含水量较普通PE薄膜分别提高18.87%

18.34%

较无覆盖分别提高1.16%

0.72%

黑色、白色PBAT全生物降解地膜和普通PE薄膜土壤全盐含量较无覆盖地膜减少15.01%~23.10%(p<0.05)。黑色全生物降解地膜产量较无覆盖在2 600

3 300 m3/hm2灌水条件下增加11.88%~16.65%

在4 200 m3/hm2灌水条件下差异不显著;白色全生物降解地膜产量较无覆膜在2 600 m3/hm2

灌水条件下提高13.42%

在3 300

4 200 m3/hm2灌水条件下差异不显著。黑色、白色PBAT全生物可降解膜的水分利用效率较普通PE地膜分别提高23.31%

13.50%;较无覆盖分别提高37.63%

26.69%。[结论] PBAT全生物降解地膜对次生盐渍化土壤的水盐运移及玉米产量有积极影响

可降解地膜替代普通地膜应用于引黄灌区盐碱地滴灌农业生产具有可行性。

Abstract

[Objective] In order to reduce soil pollution caused by plastic film

the application effect of using PBAT fully biodegradable plastic film instead of ordinary PE plastic film combined with drip irrigation to grow maize in mild secondary salinized soil was investigated. [Methods] Comparative tests were conducted on four mulching treatments

including PBAT biodegradable film (black and white) mulching

ordinary black film mulching and open-field cultivated maize without mulching

under three irrigation conditions (2 600

3 300 and 4 200 m3/hm2) from April to September 2023 in Xinghuocun Experimental Station

Huinong District

Ningxia

and there were 12 treatments in total. The degradability of degradable film and its effect on soil water and salt transport and maize growth were studied. [Results] The water content in the 0-20 cm soil layer under black and white fully biodegradable mulch film was 18.87% and 18.34% higher than that under ordinary PE film

respectively

and 1.16% and 0.72% higher than that without mulching

respectively

and the soil salt content under black and white PBAT fully biodegradable film mulching and ordinary PE film mulching was reduced by 15.01%~23.10% compared with that without mulching (p< 0.05). Compared with the non-mulching conditions with 2 600 and 3 300 m3/hm2 irrigation

the yield under black fully biodegradable film mulching increased by 11.88%~16.65%

but the difference was not significant under the irrigation condition of 4 200 m3/hm2. Compared with the yield of 2 600 m3/hm2 irrigation without mulching

the yield of white fully biodegradable film mulching increased by 13.42% under irrigation conditions

but there was no significant difference under 3 300 and 4 200 m3/hm2 irrigation conditions. The water-use efficiency of black and white PBAT fully biodegradable film mulching was increased by 23.31% and 13.50% respectively compared with ordinary PE film mulching. Compared with no-mulching

it increased by 37.63% and 26.69% respectively. [Conclusion] The study suggests that it is feasible to replace ordinary mulch film with degradable mulch film in drip irrigation agricultural production in saline-alkali lands in the irrigation areas along the Yellow River.

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