| Effects of surface mulching on soil water and temperature efficiency and maize yield in semi\|arid area |
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| DOI：10.7606/j.issn.1000-7601.2023.02.20 |
| Key Words: maize surface mulching soil moisture soil temperature yield semi\|arid area |
| Author Name | Affiliation | | ZHANG Lihua | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun, Jilin 130033, China | | XU Chen | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun, Jilin 130033, China | | YAN Weiping | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun, Jilin 130033, China | | SUN Ning | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun, Jilin 130033, China | | TAN Guobo | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun, Jilin 130033, China | | YU Jiang | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun, Jilin 130033, China | | ZHAO Hongxiang | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun, Jilin 130033, China | | LI Fei | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun, Jilin 130033, China | | MENG Xiangmeng | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun, Jilin 130033, China | | BIAN Shaofeng | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun, Jilin 130033, China |
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| Abstract: |
| To explore water efficient cultivation technology and improve maize yield in semi\|arid area of Jilin Province, a four\|year experiment was carried out with different mulching materials. Four treatments included no mulching (CK), common plastic film mulching (CM), degradable plastic film mulching (DM) and straw mulching (SM). The effects of different mulching treatments on soil moisture, soil temperature, maize growth and development, yield and water use efficiency were studied. The results showed that the temporal and spatial variation of soil water storage during maize growth period was related to the temporal and spatial distribution of rainfall in that year. The soil water storage in 20~60 cm vertical space was significantly higher than that in 0~20 cm, and the soil water storage of different treatments was SM>CM>DM>CK. The soil temperature of 0~20 cm in the cultivated layer increased first and then decreased with the growth period of maize, and gradually decreased with the increase of soil depth. The decreasing range was CM>SM>DM>CK. Compared with CK, CM and DM increased the ground temperature by 2.12℃, 1.71℃ and 2.07℃, 1.52℃ respectively in May and June, while SM decreased by 1.72℃, 1.01℃. Compared with the temperature in May and June, the daily ground temperature of plastic film mulching increased by 2.2~3.2℃, and that of straw mulching decreased by 0.3~0.6℃. The decline range of ground temperature of mulching in August and September was lower than that of air temperature. The average yield of CM and DM increased by 8.59% and 14.10%, that of SM decreased by 8.96%, the water use efficiency of CM and DM increased by 10.3% and 15.6%, and the straw mulching decreased by 8.4%. Maize yield was significantly positively correlated with soil temperature in soil layer 5 cm, 10 cm, 15 cm and 20 cm during May, June, August and September, and negatively correlated with soil water storage in soil layer 0~20 cm and R1. Degradable plastic film mulching has multiple functions such as moisture conservation, temperature rise, yield increase, water efficiency and environmental protection. It can be popularized in the cultivation of water efficient maize yield in semi\|arid area. |
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