ZHANG Lihua, XU Chen, YU Jiang, et al. Effects of Straw Returning on Soil Moisture, Temperature and Maize Yield in Semi Humid Area[J]. 2021, 35(4): 299-306.
DOI:
ZHANG Lihua, XU Chen, YU Jiang, et al. Effects of Straw Returning on Soil Moisture, Temperature and Maize Yield in Semi Humid Area[J]. 2021, 35(4): 299-306. DOI: 10.13870/j.cnki.stbcxb.2021.04.041.
Effects of Straw Returning on Soil Moisture, Temperature and Maize Yield in Semi Humid Area
In order to explore the cultivation technology mode of high yield and water use efficiency of maize in semi humid area
the method of straw returning combined with soil tillage was adopted
and four treatments were set up
including straw rotary ridge tillage (CK)
straw deep ploughing returning (SP)
straw mulching returning and no tillage (SC) and straw mulching returning and subsoiling (SS). The effects of different treatments on soil moisture
soil temperature
maize yield and water use efficiency were studied. The results showed that: (1) The change of soil water storage showed a single peak curve and double peaks curve in 2018 and 2019
respectively. The soil water storage of all treatments in 2018 and SS treatment in 2019 increased significantly with the increasing of soil depth. Compared with CK treatment
the soil water storage in SC treatment and SS treatment increased by 7.58% to 18.40% and 9.24% to 21.94% in 2018
respectively. (2) The soil temperature of 0—20 cm plough layer increased first and then decreased with the growth period of maize
and decreased gradually with the increasing of soil depth. Straw returning could regulate soil temperature. Compared with CK
the SP treatment increased ground temperature by 0.46 ℃ and 0.21 ℃ in May and June
SC treatment decreased the ground temperature by 1.72 ℃ to 2.79 ℃ from May to July
and increased the ground temperature by 0.22 ℃ in September. (3) In 2018 and 2019
compared with CK
the maize yield of SS
SP and SC treatments increased by 13.88% and 14.82%
7.59% and 9.12%
7.42% and 8.50%
respectively. (4) In 2018 and 2019
the water use efficiency of SS
SP and SC treatments increased by 13.79% and 9.75%
6.11% and 5.93%
5.67% and 3.83%
respectively. (5) Soil water storage each growth period (time) and 0—60 cm soil layer (space) had significant effects on maize yield. Soil water storage at 0—60 cm and each period except flowering stage in July and below 15 cm had significant positive correlation with water use efficiency. Soil temperature had no significant effect on maize yield and water use efficiency. Straw mulching and subsoiling technology increased soil water storage
improved soil temperature
increased maize yield and water use efficiency
and provided efficient cultivation technology pattern for rain fed agricultural area.
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Related Author
ZHANG Wanqing
WANG Xiuru
ZHOU Yang
SUN Jialu
QI Zhijuan
LI Mo
SONG Fang
XU Jingwen
Related Institution
School of Soil and Water Conservation, Beijing Forestry University
School of Water Conservancy and Civil Engineering, Northeast Agricultural University
Key Laboratory of Efficient Utilization of Agricultural Water Resources, Ministry of Agriculture and Rural Affairs, Northeast Agricultural University
Shanxi Institute of Organic Dryland Farming, Shanxi Agricultural University,Key Laboratory of Organic Dryland Agriculture (Co-construction by Ministry of Agriculture and Rural Affairs and Shanxi Province),Shanxi Key Laboratory of Organic Dryland Farming
College of Agriculture, Shanxi Agricultural University