核农学报2024，Vol.38Issue(1)：149-159,11.DOI:10.11869/j.issn.1000-8551.2024.01.0149
增密扩行对宽幅匀播胡麻抗倒伏能力及籽粒产量的影响
Effects of Increasing Density and Row Spacing on Lodging Resistance and Grain Yield of Oil Flax under Wide-Width Uniformed Sowing Status
摘要
Abstract
This study used an oil flax variety of Dingya 26 as the test material to explore the improvement of its lodging resistance and grain yield in dry farming areas.Thus,a split plot field experiment was carried out to study the effects of increasing density(750,850 and 950 grains·m-2)and expanding row spacing(15,20 and 25 cm row spacing)on the lodging resistance and yield of oil flax in 2021.Compared to the conventional drilling sowing density,the plant height and center of gravity height increased by 8.96%and 9.13%with the increase of oil flax planting density,respectively.The stem diameter,fresh weight per plant,stem strength,breaking resistance and lodging resistance index significantly decreased by 9.58%,18.08%,11.11%,34.30%and 22.46%,respectively.At the density level of 950 grains·m-2,compared to the conventional drilling sowing,the wide-width uniform sowing was beneficial to alleviate the rapid growth of oil flax plant height,increase stem diameter,and enhance stem lodging resistance.In addition,the stem strength,breaking resistance,and lodging resistance index of 15 and 20 cm row spacing 10 cm increased significantly by 1.71%and 10.67%,6.58%and 19.30%,13.62%and 20.71%,respectively.The grain yield increased by 19.85%-30.46%,where the grain yield under 20 cm row spacing treatment was the highest(1 884.44 kg·hm-2).In summary,10 cm width and 20 cm row spacing combined with 950 grain·m-2 planting density was beneficial to improve the lodging resistance and grain yield of oil flax in the dry farming area of central Gansu.This study provides a technical reference for the stress-resistant and high-yield cultivation model of oil flax in dry farming areas.关键词
胡麻/宽幅匀播/密度/抗倒伏/产量Key words
oil flax/wide-width uniform sowing/density/lodging resistance/yield引用本文复制引用
薛文芳,高玉红,胡亚朋,崔政军,王一帆,剡斌,晁长艳..增密扩行对宽幅匀播胡麻抗倒伏能力及籽粒产量的影响[J].核农学报,2024,38(1):149-159,11.基金项目
甘肃省教育科技创新产业支撑计划项目(2021CYZC-38),中央引导地方科技发展专项基金(ZCYD-2021-12),国家现代农业产业技术体系(CARS-14-1-16),甘肃农业大学干旱生境作物学重点实验室主任基金课题(GSCS-2020-Z6) （2021CYZC-38）
