| Effects of different tillage methods on soil moisture and dry matter production of summer soybean |
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| DOI：10.7606/j.issn.1000-7601.2016.04.30 |
| Key Words: tillage methods multiple cropping soybean soil water dry matter production yield |
| Author Name | Affiliation | | SU Li-li | College of Agricultural, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | TANG Jiang-hua | College of Agricultural, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | LI Ya-jie | College of Agricultural, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | XU Wen-xiu | College of Agricultural, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | PENG Jiang-long | College of Agricultural, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | ZHANG Yong-qiang | College of Agricultural, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China |
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| Abstract: |
| In order to provide a theoretical basis of high-yield cultivation mode for summer soybean and investigate the effects of different tillage methods on dry matter production and soil moisture of summer soybean following wheat harvest in northern Yili valley under drip irrigation, field experiments had been conducted for two years (2013 and 2014) with four different treatments including tilling film (TP), tillage (T), rotary (RT) and no-tillage (NT) by use of the macrozone experimental design. In these two years, the resulting effects on soil water content, leaf area index (LAI), dry matter accumulation in various organs (stems, leaves, petioles, pods, and grains) and yield by four treatments followed the order of TP>T>RT>NT. The average soil water content by TP was 18.64%, 5.39%, 7.67%, and 12.31% higher than that by T, RT, and NT, respectively. Both LAI and dry matter became increased first and then went decreased during the whole growth period of summer soybean under different tillage methods, and the averages by TP were 55.68% and 55.68% higher than those by NT, both reaching the significantly different level (P≤0.05). In addition, the number of pods per plant, grains per plant, and grain weight in two years by TP were also 50.28%, 48.10%, and 11.77%, respectively, than those by NT treatment. The highest yield by TP (2 082.69 kg·hm-2) was 20.82% higher than the lowest yield by NT treatment. Due to the fact that TP could increase the population leaf area index, promote the accumulation of plant photosynthetic production, improve dry matter accumulation in various organs and the whole plant, TP could be the suitable tillage method under drip irrigation for summer soybean in local natural conditions. |
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