期刊
AGRICULTURE-BASEL
卷 11, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/agriculture11111077
关键词
sowing pattern; winter wheat; biomass; grain yield; harvest index
类别
资金
- National Natural Science Foundation of China [32060427]
- Guizhou Science and Technology Support Program Project [(2019) 2399, yiban217]
- Guizhou Provincial Biology First-Class Subject Construction Project [GNYL (2017) 009]
- [(2021) yiban217]
The study found that the BU sowing pattern resulted in higher grain yield, above-ground biomass, and spike number compared to the LD sowing pattern in all three growing seasons.
The relationship between the sowing patterns and yield performance is a valuable topic for food security. In this study, a novel belt uniform (BU) sowing pattern was reported, and a field experiment with four winter wheat cultivars was carried out over three consecutive growing seasons to compare the dry matter accumulation, harvest index (HI), grain yield and yield components under BU and line and dense (LD) sowing patterns [BU sowing with narrow (15 cm) spacing; BU sowing with wide (20 cm) spacing; LD sowing with wide (33.3 cm) row spacing; LD sowing with narrow (16.6 cm) row spacing]. Four cultivars produced a higher mean grain yield (GY), above-ground biomass (AGB) and spike number (SN) per m(2) under the BU sowing patterns than the LD sowing patterns in all three growing seasons. However, yield stability under the BU sowing patterns did not increase with the improved grain yield. The HI did not change with sowing patterns, and the contribution of above-ground biomass to grain yield (84%) was more than 5-fold higher than that of HI (16%). Principal component and correlation analyses indicated that the grain yield was positively correlated with the aboveground biomass and SN, while the HI and 1000-grain weight were not correlated with grain yield. We concluded that (1) the novel BU sowing patterns achieved a higher yield potential in winter wheat but did not further improve yield stability; (2) increasing the dry matter accumulation without changing the HI drove improvements in the SN and grain number per spike, thus increasing grain yield.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据