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中国农学通报

中国农学通报 ›› 2016, Vol. 32 ›› Issue (21): 67-74.doi: 10.11924/j.issn.1000-6850.casb15080144

• 农学 农业基础科学 • 上一篇    下一篇

种植密度、播期和施肥对西藏不同青稞品种籽粒灌浆特性影响

孙全平,刘国一,侯亚红,李 雪,唐亚伟,尼玛扎西   

  1. 西藏自治区农牧科学院 农业资源与环境研究所,西藏自治区农牧科学院 农业资源与环境研究所,西藏自治区农牧科学院 农业资源与环境研究所,西藏自治区农牧科学院 农业资源与环境研究所,西藏自治区农牧科学院 农业研究所,西藏自治区农牧科学院
  • 收稿日期:2015-08-28 修回日期:2016-06-27 接受日期:2016-01-25 出版日期:2016-07-15 发布日期:2016-07-15
  • 通讯作者: 刘国一
  • 基金资助:
    农业部农业环境重点实验室开放基金研究课题，国家科技支撑计划“藏青2000”青稞新品种生态适应性研究与高产稳产栽培规范指标研制及应用”(2013BAD30B02-1)；西藏自治区自然科学基金项目“拉萨市典型区域农田土壤重金属空间分布及生态安全研究”(13-50)。

Effects of Planting Density Sowing Date and fertilizer application dose on Grain-filling Characteristics of different highland barley Varieties in Tibet

  • Received:2015-08-28 Revised:2016-06-27 Accepted:2016-01-25 Online:2016-07-15 Published:2016-07-15

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摘要： 为了给西藏青稞高产栽培及新品种选育提供依据，选用不同种植密度、播期和施肥处理现有的4个主要青稞品种，通过田间试验研究不同品种籽粒灌浆过程。结果表明，不同青稞品种在不同种植密度、播期和施肥处理下的籽粒灌浆特征表现出相似性，4个品种的平均灌浆速率大小依次为‘藏青2000’＞‘藏青320’＞‘喜马拉雅22’＞‘藏青13’；播期、种植密度和施肥对青稞籽粒产量的影响作用力为：播期＞施肥＞种植密度；不同青稞品种灌浆期籽粒百粒干重均在3.54 g~6.71 g之间，所有试验处理平均百粒干重最高的是T1（播期为4月10日）处理的‘藏青2000’，达到5.8 g/百粒。综合分析表明，播期对4个青稞品种的灌浆特性和产量效益影响最为明显。因此，适时早播是青稞获得高产的关键。

关键词: 湿地提取, 湿地提取, 监督分类, 决策树, 钦州湾

Abstract: In order to offer evidence for high yield cultivation and selecting new varieties, different treatments of planting density sowing date and fertilizer application dose were selected to treated four main highland barley in Tibet, a field experiment was conducted to study the grain filling processes of different varieties. The results showed that, in different treatments of planting density sowing date and fertilizer application dose, the Grain-filling Characteristics of different highland barley Varieties exhibits a similarity, and the size of average filling rate to four highland barley were respectively 'Zangqing2000'＞'Zangqing320'＞'Ximalaya22'＞'Zangqing13'. The effects of planting density sowing date and fertilizer application dose to grain yield was in sequence of sowing date＞fertilizer application dose＞planting density. The dry weight of one hundred seeds at whole filling stage were all between 3.54 g and 6.71 g, the highest average dry weight of one hundred seeds was 'Zangqing2000' with T1 treatment (sowing date 20th April), reached to 5.8 g. The results of these studies indicated that sowing date is the most significant cultivation factor to grain-filling characteristics and production benefit of highland barley. So, early sowing at an appropriate time is the key factor for highland barley to obtain high yields.

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