| Effects of plastic film mulching during autumn on soil water and water utilization of spring maize in dry land of northwest Liaoning |
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| DOI：10.7606/j.issn.1000-7601.2016.02.02 |
| Key Words: mulching in autumn mulching in spring water storage water profile distribution yield water use efficiency |
| Author Name | Affiliation | | FENG Chen | Tillage and Cultivation Research Institute, Liaoning Academy of Agricultural Sciences, Shenyang, Liaoning 110161, China | | SUN Zhan-xiang | Tillage and Cultivation Research Institute, Liaoning Academy of Agricultural Sciences, Shenyang, Liaoning 110161, China | | ZHENG Jia-ming | Tillage and Cultivation Research Institute, Liaoning Academy of Agricultural Sciences, Shenyang, Liaoning 110161, China | | FENG Liang-shan | Tillage and Cultivation Research Institute, Liaoning Academy of Agricultural Sciences, Shenyang, Liaoning 110161, China | | BAI Wei | Tillage and Cultivation Research Institute, Liaoning Academy of Agricultural Sciences, Shenyang, Liaoning 110161, China
College of Land and Environment, Shenyang Agricultural University, Shenyang, Liaoning 110866, China | | ZHANG Zhe | Tillage and Cultivation Research Institute, Liaoning Academy of Agricultural Sciences, Shenyang, Liaoning 110161, China
College of Land and Environment, Shenyang Agricultural University, Shenyang, Liaoning 110866, China | | ZHANG Guang-cai | College of Land and Environment, Shenyang Agricultural University, Shenyang, Liaoning 110866, China |
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| Abstract: |
| Plastic film mulching in autumn is an innovation and extension technology of traditional plastic film mulching technology. In order to explore the effects of mulching during autumn on soil water and water use efficiency of spring maize, four mulching treatments, including traditional planting (T1), spring mulching (T2), autumn mulching (T3) and autumn mulching with straw return (T4), were carried out in Fuxin Scientific Observing and Experimental Station of Agro-environment and Arable Land Conservation, to clarify the effects of different mulching treatments on soil water storage, distribution, crop yields and water use efficiency of spring maize. Our result showed that compared with T1, T3 and T4 could increase the water storage before sowing by 35.44% and 23.09%, respectively, while by 40.79% and 27.95%, compared with T2. T3 and T4 could also increase water storage during the whole growth period by 30.70% and 20.10%, 37.77% and 26.59%, respectively, compared with T1 and T2. The soil profile water was relatively abundant during the whole growth period, while T2 had a very big variation in profile water, which had a serious lack of water in subsoil. The maize yield by T3 was the highest, which was 13.26% and 13.52% higher than that of T1 and T2, respectively. It was mostly contributed by the increase in single grain yield. Compared with T1, T2 and T4, T3 could increase water use efficiency by 8.24%, 9.74% and 8.83%, respectively. |
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