| Study on the growth regularity of high yield and dry matter accumulation of the extremely\|late winter sown wheat in Northern Xinjiang |
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| DOI：10.7606/j.issn.1000-7601.2019.06.22 |
| Key Words: wheat extremely\|late winter sowing sowing date spring wheat growth characteristics dry matter |
| Author Name | Affiliation | | XUE Lihua | Grain Crops Research Institute of Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China | | WANG Tong | College of Agronomy, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | LI Lei | College of Agronomy, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | ZHOU Fangzhi | Moyu Test Station, Xinjiang Academy of Agricultural Sciences, Hetian 848100, China | | WANG Huan | College of Agronomy, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | Su Wenping | College of Agronomy, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | ZHANG Jianxin | College of Agronomy, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China |
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| Abstract: |
| In order to investigate characteristics of growth and dry matter accumulation and distribution of high yield wheat under extremely\|late winter sowing in the Northern Xinjiang. In 2016-2018, a split\|plot experiment design was used to study the effects of sowing date treatment of three extremely\|late winter sowing (B0, B1, and B2) and spring sowing (B3) on the growth characteristics, leaf area index, dry matter accumulation, and yield of the Xinchun 6, Xinchun 27, Xinchun 29, and Xinchun 43. The results showed that compared with spring wheat (B3), extremely\|late sowed winter wheat emerged seedling 13~24 d earlier, matured 7~9 d earlier, extended growth period 2~18 d, increased grain number per ear by 1.6%~45.5% and 1000-grain weight by 9.4%~19.5%; reduced basic seedling number by 15.6%~60.0%, highest stem by 5.4%~24.2%, ear number by 21.3%~36.7%, and peak of leaf area index by 25.7%~37.7%; increased dry matter quality by 4.4%~44.1%, economic coefficient by 6.4%~21.5%, and yield by 11.4%~21.2%. Among of them, the yield of B2 treatment was higher in early November and the yield of Xinchun27 (B2) was 7 852.8 kg·hm-2 and the growth period was 13 days longer than that of spring wheat, and the maturity was 9 days earlier, and basic seedling number 270×104 with spike number of 441.7×104, maximum leaf area index of 4.6, dry matter accumulation mass of 17 685.7 kg·hm-2, and economic coefficient of 0.47. The Xinchun 27 was sown in early November, with a sowing density of 1 000×104 grains·hm-2, and yield attained 7 852.8 kg·hm-2. |
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