| Effect of straw strip mulching of different model on soil moisture content of winter wheat in arid region |
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| DOI：10.7606/j.issn.1000-7601.2018.03.17 |
| Key Words: winter wheat maize straw mulching belt width soil moisture yield rain-fed agricultural region |
| Author Name | Affiliation | | LI Rui | Gansu Provincial Key Lab of Arid land Crop/College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | CHENG Hong-bo | College of Life Science and Technology, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | WANG Fang | Gansu Provincial Key Lab of Arid land Crop/College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | CHAI Yu-wei | Gansu Provincial Key Lab of Arid land Crop/College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | CHEN Yu-zhang | Gansu Provincial Key Lab of Arid land Crop/College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | CHANG Lei | Gansu Provincial Key Lab of Arid land Crop/College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | HUANG Cai-xia | College of Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | CHAI Shou-xi | Gansu Provincial Key Lab of Arid land Crop/College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| The research has been conducted on the Loess Plateau which is characterized by semi-arid climate and rain-fed conditions. Four belt mulching groups of whole corn stalk of MS3, MS4, MS5, MS6 were set up in contrast to open field cultivation, so as to study the effect of differnet treatments on the winter wheat yield and soil moisture content. The results showed that the appropriate straw strip mulching could significantly improve soil moisture content and water use efficiency, as evidenced by the winter wheat yield increased by 69.1% and 41.3% respectively with MS3 and MS4, and water use efficiency by 88.1% and 39.1%, compared to CK. MS3 and MS4 had dual effects on the increase and the decrease of soil moisture content in different soil layers during different periods. The increase effect on soil moisture content was more significant. The soil moisture content was increased by 1.00 and 0.35 percent respectively, treated by MS3 and MS4 compared to CK during the whole growth period. Moreover, MS3 could remarkably improve the distribution of soil moisture in different soil layers at different growth stages, as well as water supply effect from the sowing-wintering stage to the green-booting stage. In addition, the water recharge effect to soil layers below and above 60 cm was superior to other treatments, which was good for the grwoth, the spike formation and the increase of grain number pers pike of winter wheat. Therefore, MS3 is of greater benefit to winter wheat production on the Loess Plateau characterized by semi-arid climate and rain\|fed conditions. |
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