| Effects of tillage methods on soil physical and chemical properties and yield of summer soybean |
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| DOI：10.7606/j.issn.1000-7601.2017.03.07 |
| Key Words: summer soybean tillage methods soil bulk density soil porosity soil moisture soil nutrient yield |
| Author Name | Affiliation | | SU Li-li | Xinjiang Agricultural University, Agriculture College, Urumqi, Xinjiang 830052, China | | LI Ya-jie | Xinjiang Agricultural University, Agriculture College, Urumqi, Xinjiang 830052, China | | XU Wen-xiu | Xinjiang Agricultural University, Agriculture College, Urumqi, Xinjiang 830052, China | | TANG Jiang-hua | Xinjiang Agricultural University, Agriculture College, Urumqi, Xinjiang 830052, China | | CHEN Chuan-xin | Xinjiang Agricultural University, Agriculture College, Urumqi, Xinjiang 830052, China | | HAO Wei-wei | Xinjiang Agricultural University, Agriculture College, Urumqi, Xinjiang 830052, China | | WANG-Na | The Extension Center of Agricultural Technology in Yining County, Yining, Xinjiang 835100, China |
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| Abstract: |
| In order to explore the effects of tillage methods on soil physical and chemical properties and yield of summer soybean, and to present an optimum cropping pattern which was suited to the soybean field in Yili River Valley under drip irrigation, a soybean field experiment in which there were four different tillage methods, i.e., tillage (T), rotary tillage (RT), no-till (NT), and tillage and plough (TP), have been carried out after the harvest of winter wheat from 2012 to 2014. The results showed that there had differences in soil bulk density, soil porosity, soil moisture, soil nutrient content and yield of soybean among four treatments. Average soil bulk density in 0～60 cm was the largest in NT, up to 1.4 g·cm-3, which was 2.2%, 4.5%, 5.3% higher than RT, T, TP treatment, respectively. The soil total porosity in 0～30 cm was highest in TP treatment and it was 1.4%, 3.8% and 5.7% higher than that of T, NT and RT, respectively. The total soil porosity below 30 cm was not significantly different. The soil water content at all measurement time showed a trend of TP>T>RT>NT. Soil organic carbon(SOC), total N, total P content in 0～20 cm soil layer were the highest in NT treatment, while for 20～40 cm soil layer they were highest in TP, followed by T treatment. TP and T treatments significantly increased soil available N and available P content in 0～40 cm soil layer. The yield, 1 369.5 kg·hm-2, was the highest in TP treatment for three years, which was 15.2%, 30.8% and 31.9% higher than that of T, RT and NT treatment. Therefore, it could be concluded that no tillage increased soil nutrient content, but film mulching after tillage could significantly improve soil physical environment, and be helpful to raise soybean yield. |
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