Effects of Ground Surface Mulching on Water-Heat-Salt and Yield in Soybean Field

Dong Yunyun; Wang Fei; Han Jianqiao

doi:10.13961/j.cnki.stbctb.2020.01.007

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Effects of Ground Surface Mulching on Water-Heat-Salt and Yield in Soybean Field

- Effects of Ground Surface Mulching on Water-Heat-Salt and Yield in Soybean Field
- Bulletin of Soiland Water Conservation Vol. 40, Issue 1, Pages: 43-50(2020)
- 作者机构：
  
  1. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
  2. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
  3. 中国科学院大学,北京,100049
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2020.01.007
  CLC： S152
- Published：2020
- 稿件说明：
移动端阅览
Dong Yunyun, Wang Fei, Han Jianqiao. Effects of Ground Surface Mulching on Water-Heat-Salt and Yield in Soybean Field[J]. Bulletin of Soiland Water Conservation, 2020, 40(1): 43-50.
DOI：

Dong Yunyun, Wang Fei, Han Jianqiao. Effects of Ground Surface Mulching on Water-Heat-Salt and Yield in Soybean Field[J]. Bulletin of Soiland Water Conservation, 2020, 40(1): 43-50. DOI： 10.13961/j.cnki.stbctb.2020.01.007.

摘要

[目的

]

研究不同覆盖措施对农田土壤水、热、盐及大豆产量的影响，为促进陕北安塞县山地梯田作物增产提供理论基础。[方法

]

以大豆（中黄35）为试验材料，设置地膜覆盖（M）、谷子秸秆覆盖量5 000 kg/hm

（J

）与2 500 kg/hm

（J

）和传统耕作（CK）4个处理进行了系统对比试验。[结果

]

①除20-40 cm土层的结荚期外，其他土层各时期M和J

处理的土壤贮水量均高于CK处理。另外在0-60 cm各土层中，出苗期M处理的土壤贮水量均高于J

处理；②在0-60 cm各土层中，全生育期M的土壤温度均高于CK处理，除结荚期外，J

处理的土壤温度均低于CK处理；③在一定范围内，M处理可提高土壤电导率，且在0-20 cm土层中，M和CK处理的电导率差异达到极显著水平（p

0.01）；④M和J

处理的大豆产量分别显著高于CK处理46.73%（p

0.01）和34.61%（p

0.05）；⑤在一定范围内，大豆产量与其全生育期的平均土壤贮水量、土壤温度和土壤电导率呈正相关关系。且相较于其他生长阶段，出苗期土壤物理条件对大豆产量的影响更为明显。[结论

]

大豆产量与出苗期土壤贮水量和电导率极显著正相关，且地膜覆盖有利于提高出苗期土壤贮水量和电导率，可促进大豆增产。

Abstract

[Objective] We studied the effects of different mulching measures on the soil water

heat

salt

and soybean yield in the farmland

in order to provide a reference for promoting crop yield in the mountain terraces of Ansai County

Shaanxi Province.[Methods] The soybean(Zhonghuang 35) was used as the material where this experiment included four treatments:film mulching (M)

mulching with 5 000 kg/hm2 straw (J5)

mulching with 2 500 kg/hm2 straw (J2) and traditional tillage (CK).[Results] ① The soil water storage of M and J5 treatments during growth stages were higher than that of CK treatment

except for the podding stage in the 20-40 cm soil layer. Additionally

the soil water storage of M in the seeding stage was higher than the J5 treatment in each soil layer. ② In each 0-60 cm soil layer

the soil temperature of M was higher than the CK treatment

during the entire growth stage. The soil temperature of J5 was lower than the CK treatment

except during the podding stage. ③ M treatment can improve soil conductivity in a certain extent. The conductivity has a significant difference between M and CK treatments (p<0.01) in the 0-20 cm soil layer. ④ The soybean yield of M and J5 were significantly higher than that of the CK treatment

by 46.73% (p<0.01) and 34.61% (p<0.05)

respectively. ⑤ There was a positive correlation between soybean yield and average soil water storage

soil temperature

and soil conductivity

during the entire growth period in a certain extent. Compared with other growth stages

the physical soil conditions had a significant effect on soybean yield during the seedling stage.[Conclusion] There is a significant positive correlation between soybean yield and soil water storage and conductivity

during the seedling stage. Therefore

film mulching can improve soil water storage and electrical conductivity during the seedling stage and promote soybean yield.

关键词

Keywords

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