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- Title
播期对不同谷子品种干物质积累、 转运和产量的影响.
- Authors
李君霞; 樊永强; 代书桃; 朱灿灿; 韩燕丽; 泰娜; 王彦辉; 宋迎辉
- Abstract
In order to determine the suitable sowing date of summer sowing foxtail millet cultivars in Henan Province, four main cultivars, Yugu 17, Yugu 23, Yugu 28 and Yugu 29, were used to analyze change rules of growth period, dry matter accumulation and transportation of various vegetative organs before anthesis and yield under five sowing dates (June 11, June 19, June 26, July 3 and July 10). The results showed that with the delay of sowing date, the days from seedling to heading of foxtail millet were shortened, while the days from heading to ripening were prolonged. With the delay of sowing date, dry weight of vegetative organs at anthesis and mature stages firstly decreased and then increased. All foxtail millet cultivars had relatively higher dry matter translocation amount of vegetative organs before anthesis under the first three sowing dates. The transportation rate of each vegetative organ before anthesis showed stem sheath> leaf> stem, while the contribution rate of vegetative organs to grain was just opposite, showing stem sheath<leaf<stem. Under different sowing dates, the transportation rate of total dry matter of vegetative organs before anthesis ranged from 17.26% to 45.83%, which showed a trend of first increase and then decrease with the delay of sowing date, while contribution rate of vegetative organs to grain ranged from 8.83% to 25.17%, which didn't show a clear pattern. Further analysis showed that spike length and diameter were not significantly affected by sowing date, and their differences were mainly due to the characteristics of cultivars, while grain weight per spike and 1000-grain weight decreased obviously with the delay of sowing date. The grain yield of all foxtail millet cultivars decreased with the delay of sowing date, and different cultivars had different responses lo the delay of sowing date, the optimum sowing dates of Yugu 17 and Yugu 23 were before June 19, while the optimum sowing dates of Yugu 28 and Yugu 29 were before June 26 and July 3, respectively. On the whole, the suitable sowing date is before June 19 for summer foxtail millet cultivars in Henan Province, and sowing date can be advanced or delayed appropriately according lo the cultivar characteristics.
- Subjects
HENAN Sheng (China); FOXTAIL millet; TRANSPORTATION rates; GRAIN yields; SOWING; SEEDLINGS
- Publication
Journal of Henan Agricultural Sciences, 2021, Vol 50, Issue 7, p39
- ISSN
1004-3268
- Publication type
Article
- DOI
10.15933/j.cnki.1004-3268.2021.07.006