[1]DONG Yunyun,WANG Fei,HAN Jianqiao,et al.Effects of Plastic Film and Straw Mulching on Soil Moisture and Soybean Yield in Dryland Farmland[J].Research of Soil and Water Conservation,2020,27(03):364-371.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 03
Page number:
364-371
Column:
目次
Public date:
2020-04-20
- Title:
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Effects of Plastic Film and Straw Mulching on Soil Moisture and Soybean Yield in Dryland Farmland
- Author(s):
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DONG Yunyun1, WANG Fei1,2,3, HAN Jianqiao1,2,3, LAN Guohua1, DING Wenbin1
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(1.Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China; 2.Institute of Soil and Water Conservation, Chinese Academy of Sciences and ministry of Water Resources, Yangling, Shaanxi 712100, China; 3.University of Chinese Academy of Sciences, Beijing 100049, China)
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- Keywords:
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soil moisture; soybean; yield; straw mulching; conservation tillage
- CLC:
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S565.1; S155.4+3
- DOI:
-
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- Abstract:
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In order to explore the effects of different mulching measures on soil moisture and crop yield in the semi-arid hilly and gully region of the Loess Plateau, systematic experiments were carried out in the mountain terraces of Ansai County, northern Shaanxi Pprovince. The soil moisture, main plant traits, yield and water use efficiency(WUE)of soybean(Zhonghuang 35)were monitored and analyzed by using four experimental treatments which were plastic film mulching(M), straw mulching with quantity of 5 000 kg/hm2 (J5), straw mulching with quantity of 2 500 kg/hm2 (J2)and traditional tillage(CK). The results showed that:(1)the average soil volume water content in 0—280 cm soil layer under M during the growth period of soybean was the largest, which was 30.08% higher than CK with the lowest soil volume water content; the water consumption in the 0—60 cm soil profile during the whole growth period decreased in the order: CK>M>J5>J2, in which the water consumption of CK and M was 10.82% (p<0.05)and 9.70% (p<0.05)higher than that of J2, respectively, and the water consumption of CK was 8.12% (p<0.05)higher than of J5, and the difference of water consumption between other treatments was not significant;(2)the plant heights, single leaf areas, single plant dry weights and 100-grain weights of soybean under each mulching treatments were all greater than those under CK, and the above trait value of M was the largest;(3)the yields of M, J5 and J2 were 46.73% (p<0.01), 34.61% (p<0.05)and 15.69% higher than that of CK, respectively, and the difference between M and J5 was not significant;(4)the WUEs of M, J5 and J2 were 48.30% (p<0.01), 45.71% (p<0.01)and 28.14% (p<0.05)higher than that of CK, respectively, and the difference between M and J5 was not significant. The yield and water use efficiency of CK are the lowest in semi-arid area, and the effect of film mulching on water conservation and yield increase is significant, but film mulching results in potential pollution problem and environmental risk. Straw mulching is an appropriate conservation tillage measure which should be promoted in this area.