Full
Outline
Sowing date, nitrogen rate and plant density are effective cultivation practices to regulate grain yield (GY) and protein content (GPC) in weak gluten wheat. In this study, a meta-analysis was performed on the effects of these main cultivation practices on GY and GPG of weak gluten wheat in the Middle and Lower reaches of Yangtze River using the existing literature data from 2002 to 2022. The control (CK) was selected from 20 October to 6 November for sowing date, from 210 to 240 kg·hm-2 for nitrogen rate, and from 180×104 to 240×104 plants·hm-2 for plant density, respectively. The meta-analysis showed that when the sowing date was delayed by 14-21 days, the GY of weak gluten wheat was significantly reduced by 9.73%, while the GPC was increased by 3.87%; when the nitrogen rate was reduced by 30-240 kg·hm-2, the GY and GPC was significantly simultaneously decreased by 6.42%-51.72% and 6.63%-19.13%, respectively; when the plant density was increased by 30×104-120×104 plants·hm-2, the GY was significantly improved by 4.39%-7.11%, while the GPC was decreased by 1.16%-3.70%, compared with the CK. Furthermore, the relationship between GY and GPC of weak gluten wheat was analyzed under different cultivation practices mentioned above in this region. The qualified grain quality (GPC<11.5%) while maintaining optimum yield (GY>6 500 kg·hm-2) could be achieved with the sowing date from October 24 to October 31, the nitrogen rate from 172 to 186 kg·hm-2, and the plant density from 293×104 to 360×104 plants·hm-2. Correspondingly, the dry matter accumulation of weak gluten wheat ranged between 9.7 and 11.3 t·hm-2 at anthesis as well as 17.5 and 20.1 t·hm-2 at maturity, while the nitrogen content of single stem, stem, leaf, and ear at anthesis is maintained within 11.7, 5.6, 30.7, and 15.8 mg·g-1.
133
33
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
