| Effects of different cultivation and balanced fertilization on spring wheat yield and water use efficiency in semiarid areas |
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| DOI：10.7606/j.issn.1000-7601.2012.01.23 |
| Key Words: cultivation whole film casing mode bunch balanced fertilization water use efficiency |
| Author Name | Affiliation | | ZHANG Pingliang | Institute of Dryland Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China
Key laboratory of High Efficiency Water Utilization in Dry Farming Region, Lanzhou, Gansu 730070, China | | GUO Tianwen | Institute of Dryland Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China
Key laboratory of High Efficiency Water Utilization in Dry Farming Region, Lanzhou, Gansu 730070, China
Key Laboratory of Northwest Drought-resistant Crop Farming, Ministry of Agriculture, Lanzhou, Gansu 730070, China | | HOU Huizhi | Institute of Dryland Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China
Key laboratory of High Efficiency Water Utilization in Dry Farming Region, Lanzhou, Gansu 730070, China | | LU Junfeng | Institute of Dryland Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China
Key laboratory of High Efficiency Water Utilization in Dry Farming Region, Lanzhou, Gansu 730070, China |
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| Abstract: |
| Field trials were conducted to study different cultivation and balanced fertilization on wheat yield and water use efficiency in semiarid areas. The results showed that cultivation of the whole film casing mode bunch helped synthesis of carbohydrates of wheat plants and increased dry matter accumulation, and the effect of implementation of N, P and K fertilization was obvious; Compared with whole film a small furrow bunch, whole film not overburden bunch and open field dibble, wheat yield increased by 3.7%～6.7%, 9.4%～10.3% and 30.7%～35.4% in the whole film casing mode bunch; In the application of respectively 180 kg/hm2, 120 kg/hm2 and 90 kg/hm2 of N, P2O5 and K2O (Z0F1 treatment), the wheat yields were the highest, achieving 4 034 kg/hm2; The water use efficiency of wheat in the whole film casing mode bunch was significantly higher than that of the open field dibble, increased by as significantly as 33.7%～48.3% at the same level of fertilization. These show that balanced fertilization can significantly increase grain yield, and increase water use efficiency in the whole film casing mode bunch. |
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