缓释尿素配施黄腐酸对隆子黑青稞发育及籽粒灌浆特性的影响  

Effects of Slow-Release Urea Combined with Fulvic Acidon the Development and Grain Filling Characteristicsof Longzi Black Highland Barley

作　　者：周新 朱定英 赵香龙 陈功喜 王建林 Zhou Xin;Zhu Dingying;Zhao Xianglong;Chen Gongxi;Wang Jianlin(Plant Science College,Tibet Agriculture&Animal Husbandry University,Linzhi 860000,Tibet,China)

机构地区：[1]西藏农牧学院植物科学学院,西藏林芝860000

出　　处：《作物杂志》2024年第4期232-239,共8页Crops

基　　金：西藏自治区中央引导地方科技项目“土壤盐渍化对化肥氮素转化过程影响及其调控机制研究”(XZ202202YD0025C);西藏自治区重大科技专项青稞新品种(系)培育(XZ202101ZD0004N-03);西藏特色农牧资源研发省部共建协同创新中心-作物方向研究(XZTSZY202001);西藏自治区重点研发计划项目“隆子黑青稞增产关键技术研究与示范”(YDZX20195400004717)

摘　　要：研究不同缓释尿素配施黄腐酸对隆子黑青稞生长发育及籽粒灌浆特性的影响,为隆子黑青稞的高产栽培提供理论依据。以隆子黑青稞为试验材料,采用随机区组设计,使用人工测量结合计算机图像识别技术,分析了隆子黑青稞灌浆过程中籽粒表型和粒色的动态变化。结果表明,各缓释尿素配施黄腐酸处理均可增加隆子黑青稞籽粒面积、粒长和粒宽,提高隆子黑青稞籽粒重,增加黑青稞千粒重;籽粒颜色变化主要在花后14 d,籽粒开始着色,并随灌浆进程的推进颜色加深,花后28 d,种胚开始着色,直至成熟期整个籽粒着色,且颜色达到最深;最大灌浆速率、渐增期灌浆速率和快增期灌浆速率与千粒重呈极显著正相关;缓增期灌浆速率与千粒重呈显著正相关,提高灌浆速率和延长灌浆持续时间是增加黑青稞产量的有效措施。缓释尿素配施黄腐酸提高了黑青稞籽粒灌浆能力和千粒重。In order to provide theoretical basis for the high-yield cultivation of Longzi black highland barley,westudied the effects of different slow-release urea combined with fulvic acid on the growth and grainfillingcharacteristics of Longzi black highland barley.The dynamic changes of grain phenotype and graincolor infilling period of Longzi black highland barley were analyzed by using random block design and artificial measurement combined with computer image recognition technology.The results showed that the surfacearea,length and width of the grain of Longzi black highland barley could be increased by the treatment of eachslow-release urea combined with fulvic acid,so as to increase the grain weight and the 1000-grain weight.Thecolor change of the seeds was mainly at 14 d after anthesis,when the seeds began coloring,and thecolordeepened with the progress of filling.At 28 d after anthesis,the seed embryos began coloring,until the maturitystage,the whole seeds were colored,and the color reached the deepest.The maximum filling rate(Rmax),thegradual filling rate(R1)and the rapid filling rate(R2)were positively correlated with the 1000-grainweight.There was a significant positive correlation between filling rate(R3)and 1000-grain weight at slowgrowthstage.Increasing filling rate and extending filling duration was an effective measure to increase the yield of blackhighland barley.Slow-release urea combined with fulvic acid improved the grain filling capacity and 1000-grainweight of black barley.

关 键 词：缓释尿素 黄腐酸 隆子黑青稞 籽粒灌浆特性 

分 类 号：S512.3[农业科学—作物学]