摘要
为明确青燕1号燕麦适宜的氮肥施量和播种量,采用随机区组设计,设置3个播种量和5个施氮水平,研究氮肥和播种量对燕麦穗部性状和种子产量的影响。结果表明,施氮量、播种量及其交互作用对种子产量和穗部性状有显著影响(P<0.001)。种子产量随施氮量和播种量的增加先增加后降低,最大值出现在90 kg/hm^(2)氮肥施用量和180 kg/hm^(2)播种量。穗部性状随施氮量和播种量变化明显,穗长、每穗小穗数、每穗粒数、每穗粒重和千粒重均随着施氮量增加先增加后降低,随播种量的增加而降低。燕麦种子产量与穗长和每穗小穗数极显著相关(P<0.01),与每穗粒数和每穗粒重之间存在显著相关性(P<0.05)。因此,90 kg/hm^(2)氮肥施用量和180 kg/hm^(2)播种量是湟中及周边地区种植燕麦的适宜栽培措施。
This study used a combination of three sowing rates and five nitrogen application rates in a randomized block design to study the effects of nitrogen fertilizer and density on panicle characters and grain yield of oats cv.Qingyan No.1.The results showed that nitrogen application rate,sowing rate and their interaction had significant effects on grain yield and panicle characteristics(P<0.001).Seed yield initially increased and followed by a decrease in response to the increasing application rate of nitrogen and sowing density,with the maximum value appeared under a combination of 90 kg/ha nitrogen application rate with 180 kg/ha sowing density(N2D2).Panicle traits changed significantly with nitrogen application rate and sowing density.Panicle length,number of spikelets per panicle,number of grains per panicle,grain weight per panicle and 1000-kernel weight increased initially and followed by a reduction along the increasing nitrogen application rate,while decreased with the increased sowing rate.The seed yield of oat was significantly correlated with panicle length and number of spikelets per panicle(P<0.01),and with number of grains per panicle and weight of grains per panicle(P<0.05).Therefore,the combination of 90 kg/ha nitrogen fertilizer and a sowing density of 180 kg/ha would be suitable cultivation measures for oats in Huangzhong and surrounding areas.
作者
贾志锋
马祥
琚泽亮
柴继宽
刘凯强
赵桂琴
JIA Zhi-feng;MA Xiang;JU Ze-liang;CHAI Ji-kuan;LIU Kai-qiang;ZHAO Gui-qin(College of Grassland Science,Gansu Agricultural University,Key Laboratory for Grassland Ecosystem of Ministry of Education,Pratacultural Engineering Laboratory of Gansu Province,Sino-U.S.Centers for Grazing Land Ecosystem Sustainability,Lanzhou 730070,China;Key Laboratory of Superior Forage Germplasm in the Qinghai-Tibetan Plateau,Academy of Animal Husbandry and Veterinary Sciences,Qinghai University,Qinghai Xining 810016,China)
出处
《草原与草坪》
CAS
CSCD
2021年第4期120-127,共8页
Grassland and Turf
基金
青海省科技厅重点实验室发展专项(2020-ZJ-Y03)
国家燕麦荞麦产业技术体系(CARS-07)。
关键词
燕麦
氮肥
播种量
种子产量
穗部性状
oat
nitrogen
sowing rate
grain yield
panicle development
