草业科学2024，Vol.41Issue(2)：345-355,11.DOI:10.11829/j.issn.1001-0629.2022-0485
高寒区'青引1号'燕麦种子产量对氮、磷、钾肥的响应
Seed yield response of'Qingyin No.1'oats to nitrogen,phosphorus,and potassium fertilizers in the alpine zone
摘要
Abstract
To clarify the effects of nitrogen,phosphorus,and potassium fertilizer on the seed yield of Avena sativa in the alpine area of the Qinghai-Tibet Plateau,a single application experiment of nitrogen,phosphorus,and potassium was set up in Huangzhong District,Xining City,Qinghai Province.Three fertilization levels were used,that is,nitrogen fertilizer levels(N0,N30,N45,N60,N75,N90 and N105),phosphate fertilizer levels(P0,P15,P30,P45,P60,P75 and P90),and potassium fertilizer levels(K0,K10,K20,K30,K40,K50 and K60),to study the effects of nitrogen,phosphorus,and potassium on the yield of'Qingyin No.1'oats.This was conducted with the aim to achieving an optimal fertilization level,improving of the fertilizer management technology of this variety in cultivation,and providing scientific guidance for the application ratio of fertilizer in the production of oat seeds in Qinghai region.The results have shown that nitrogen,phosphorus,and potassium fertilizers were treated with 60,60,and 50 kg·ha-1,reaching 4 358.6,6 285.0,and 6 729.1 kg·ha-1.Potassium fertilizer had the most pronounced effect on oat seed yield.Nitrogen fertilizer could significantly increase the number of oat paniclelets,inflorescence length,and thousand kerner weight.Phosphate fertilizer could promote the effective tillering,grain width,and monoseque grain weight of oats.Meanwhile,potassium fertilizer could help increase the effective tiller count,grain length,grain width,monoseque grain weight,and thousand kerner weight.The direct effect of grain width and panicle number on seed yield was the most pronounced at the level of single application of nitrogen,phosphorus,and potassium.The number of flowers and grain width had a pronounced gain effect on seed yield through indirect effects on other yield traits.In the seed production of'Qingyin No.1'oat in high and cold areas,application of potassium fertilizer can effectively increase the seed yield of'Qingyin No.1'oats.关键词
施肥水平/燕麦/高寒地区/通径分析/氮磷钾/回归分析/产量性状Key words
fertilizer level/oats/alpine region/throughput analysis/nitrogen,phosphorus and potassium/regression analysis/yield traits引用本文复制引用
刘慢,刘文辉,刘凯强,贾志锋,梁国玲..高寒区'青引1号'燕麦种子产量对氮、磷、钾肥的响应[J].草业科学,2024,41(2):345-355,11.基金项目
青海省科技创新平台建设专项"青藏高原种质资源研究与利用实验室"(2022-ZJ-Y01) （2022-ZJ-Y01）
现代农业产业技术体系建设专项(CARS-34) （CARS-34）
"昆仑英才村振兴人才"专项农业农村科技攻关团队资助 （）
