| Effect of sowing date on yield and water use efficiency of winter wheat on dry land in arid year |
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| DOI：10.7606/j.issn.1000-7601.2011.01.31 |
| Key Words: arid year sowing date wheat on dryland yield water use efficiency |
| Author Name | Affiliation | | DANG Jianyou | Wheat Research Institute, Shanxi Academy of Agricultural Sciences, Linfen, Shanxi 041000, China | | WANG Jiaoai | Wheat Research Institute, Shanxi Academy of Agricultural Sciences, Linfen, Shanxi 041000, China | | ZHANG Jing | Wheat Research Institute, Shanxi Academy of Agricultural Sciences, Linfen, Shanxi 041000, China | | CAO Yong | Wheat Research Institute, Shanxi Academy of Agricultural Sciences, Linfen, Shanxi 041000, China | | ZHANG Jianhua | Wheat Research Institute, Shanxi Academy of Agricultural Sciences, Linfen, Shanxi 041000, China | | WEI Yunzong | Wheat Research Institute, Shanxi Academy of Agricultural Sciences, Linfen, Shanxi 041000, China | | ZHANG Dingyi | Wheat Research Institute, Shanxi Academy of Agricultural Sciences, Linfen, Shanxi 041000, China |
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| Abstract: |
| Effect of sowing date on growth, grain yield, water use efficiency(WUE) of winter wheat on dry land in arid years was investigated through field experiment. The results showed that wheat sowing on September 30 could get high tillering and high panicle rate and rational groups. Furthermore, it had high SPAD value of flag leaves, big leaf areas of upper three leaves, and total transfer amount and total transfer rate during early and middle filling stage were between other sowing dates. It could also keep the longest filling period of fast and slowly increasing stages(T2, T3), and the highest average filling rate(R). All of these led to the most panicles, the highest 1000-kernel weight, and the highest grain yield of 2 623.3 kg/hm2, which was 84.48% and 10.11% higher than the wheat sowing at September 20 and October 5, respectively. When sowing on September 30, the water consumption of wheat during growth stage was between those with other sowing dates, and WUE of grain was 0.979 kg/mm, which was the highest. |
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