| Effect of double ridges mulched with wide plastic film on soil water, soil temperature and yield of corn in semiarid Loess Plateau of China |
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| DOI：10.7606/j.issn.1000-7601.2010.02.06 |
| Key Words: semiarid Loess Plateau of China plastic film mulch double ridges mulched with wide plastic film soil moisture soil temperature water use efficiency |
| Author Name | Affiliation | | JIN Shengli | Yuzhong Agriculture Extension Service Center, Yuzhong，Gansu 730100, China | | ZHOU Limin | Key Laboratory of Arid And Grassland Ecology, Lanzhou University, Lanzhou, Gansu 730000, China | | LI Fengmin | Key Laboratory of Arid And Grassland Ecology, Lanzhou University, Lanzhou, Gansu 730000, China | | ZHANG Guangquan | Yuzhong Agriculture Extension Service Center, Yuzhong，Gansu 730100, China |
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| Abstract: |
| The field was planted with corn and mulched with plastic film in different ways. Five treatments were tested: (1) Flat plot without mulch (CK); (2) Double ridges mulched with plastic film, the joint of two ridges was furrowed and corn was planted in double furrows (SL); (3) Alternating ridges and furrows, only the ridge was mulched with plastic film and corn was planted in the two sides of the ridge (TL); (4) No ridge, alternating mulched flat plot and bare flat plot. (TP); (5) No ridge, the flat plot was mulched with plastic film (QP). Corn was planted in the mulched zone in treatments (4) and (5). The results showed that
the pattern of SL performed best in harvesting rainwater and its water evaporation was the lowest. The topsoil water content in SL was higher than in other treatments in the stage of seeding and maturity of corn. The soil temperature in SL during the stage of maturity was also the highest, 6.1℃ higher than CK. The order of yield from high to low was SL＞QP＞TL＞TP＞CK, and SL was 21.9% greater than QP, 64.8% greater than TL, 32.1% greater than TP and 1045% greater than CK. The benefit in SL was 1.2 times of QP, 1.7 times of TL, 1.3 times of TP, and 10.2 times of CK. Therefore we could see this new pattern could improve the grain yield and income of people. It was an effective agricultural practice in the semiarid Loess Plateau in China. |
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