为了从产量、品质方面准确评价旱肥地试验小麦新品系,以2020—2021年连续2年参加国家黄淮冬麦区旱地组多点比较试验的26份新品系为材料,应用多元统计方法分析了大田条件下2年间产量和品质性状的变化。结果表明:26份品系的产量和品质性状...为了从产量、品质方面准确评价旱肥地试验小麦新品系,以2020—2021年连续2年参加国家黄淮冬麦区旱地组多点比较试验的26份新品系为材料,应用多元统计方法分析了大田条件下2年间产量和品质性状的变化。结果表明:26份品系的产量和品质性状2年变异系数分别为2.0%~74.2%和2.1%~95.1%,变异较大,变异系数大小顺序依次为稳定时间>湿面筋含量>蛋白质含量>吸水率=单位面积产量>容重;相关分析表明,2年产量与品质性状存在负相关关系,稳定时间均与蛋白质含量、吸水量正相关,稳定时间与产量负相关,其中稳定时间与蛋白质含量相关系数均较高。在相关分析的基础上,采用聚类分析方法将2年中26份小麦参试品系聚为4类,并在主成分品种、性状(genotype by trait,GT)双标图(biplot)和聚类图中进行展示,聚类结果与新品系的实际表现一致,其中‘泰科麦4835’‘洛旱35’‘农大162’‘山农611436’连续2年划为同一类型,表现为产量较高、品质优良。该研究结果可为参试新品系的合理评价和推广应用提供理论依据。展开更多
在推进生态文明建设的背景下,生态清洁小流域建设作为改善区域生态环境、提升水土保持能力的重要举措,日益受到社会各界的广泛关注。在推进生态清洁小流域建设的实践中,尽管各地积极探索并取得了一定成效,但在建设过程中仍面临多重挑战...在推进生态文明建设的背景下,生态清洁小流域建设作为改善区域生态环境、提升水土保持能力的重要举措,日益受到社会各界的广泛关注。在推进生态清洁小流域建设的实践中,尽管各地积极探索并取得了一定成效,但在建设过程中仍面临多重挑战与困境,严重制约了其持续健康发展。生态清洁小流域在建设过程中,面临的问题主要包括规划执行不力、资金投入有限、治理措施单一与协同机制不健全等问题。本文通过剖析问题发生的成因,系统探讨生态清洁小流域建设过程中的关键问题及应对策略,通过强化科学规划、多元化资金投入与提升公众参与度、加强科技成果转化提高创新能力,建立跨部门协作平台,推动生态清洁小流域建设的顺利进行。以期为未来的建设实践提供有力支撑。Under the background of promoting the construction of ecological civilization, the construction of ecologically clean small watershed, as an important measure to improve the regional ecological environment and enhance the ability of soil and water conservation, has attracted increasing attention from all walks of life. In the practice of promoting the construction of ecologically clean small watershed, although various localities have actively explored and achieved certain results, they still face multiple challenges and difficulties in the construction process, which seriously restricts its sustainable and healthy development. In the process of constructing ecologically clean small watershed, the problems we face mainly include poor planning, limited capital investment, single management measures and imperfect coordination mechanism. By analyzing the causes of the problems, this paper systematically discusses the key problems and coping strategies in the construction of ecologically clean small watershed. Through strengthening scientific planning, diversifying capital investment and enhancing public participation, strengthening the transformation of scientific and technological achievements to improve innovation ability, and establishing a cross-departmental collaboration platform, the smooth progress of ecologically clean small watershed construction is promoted, in order to provide strong support for the future construction practice.展开更多
文摘为了从产量、品质方面准确评价旱肥地试验小麦新品系,以2020—2021年连续2年参加国家黄淮冬麦区旱地组多点比较试验的26份新品系为材料,应用多元统计方法分析了大田条件下2年间产量和品质性状的变化。结果表明:26份品系的产量和品质性状2年变异系数分别为2.0%~74.2%和2.1%~95.1%,变异较大,变异系数大小顺序依次为稳定时间>湿面筋含量>蛋白质含量>吸水率=单位面积产量>容重;相关分析表明,2年产量与品质性状存在负相关关系,稳定时间均与蛋白质含量、吸水量正相关,稳定时间与产量负相关,其中稳定时间与蛋白质含量相关系数均较高。在相关分析的基础上,采用聚类分析方法将2年中26份小麦参试品系聚为4类,并在主成分品种、性状(genotype by trait,GT)双标图(biplot)和聚类图中进行展示,聚类结果与新品系的实际表现一致,其中‘泰科麦4835’‘洛旱35’‘农大162’‘山农611436’连续2年划为同一类型,表现为产量较高、品质优良。该研究结果可为参试新品系的合理评价和推广应用提供理论依据。
文摘在推进生态文明建设的背景下,生态清洁小流域建设作为改善区域生态环境、提升水土保持能力的重要举措,日益受到社会各界的广泛关注。在推进生态清洁小流域建设的实践中,尽管各地积极探索并取得了一定成效,但在建设过程中仍面临多重挑战与困境,严重制约了其持续健康发展。生态清洁小流域在建设过程中,面临的问题主要包括规划执行不力、资金投入有限、治理措施单一与协同机制不健全等问题。本文通过剖析问题发生的成因,系统探讨生态清洁小流域建设过程中的关键问题及应对策略,通过强化科学规划、多元化资金投入与提升公众参与度、加强科技成果转化提高创新能力,建立跨部门协作平台,推动生态清洁小流域建设的顺利进行。以期为未来的建设实践提供有力支撑。Under the background of promoting the construction of ecological civilization, the construction of ecologically clean small watershed, as an important measure to improve the regional ecological environment and enhance the ability of soil and water conservation, has attracted increasing attention from all walks of life. In the practice of promoting the construction of ecologically clean small watershed, although various localities have actively explored and achieved certain results, they still face multiple challenges and difficulties in the construction process, which seriously restricts its sustainable and healthy development. In the process of constructing ecologically clean small watershed, the problems we face mainly include poor planning, limited capital investment, single management measures and imperfect coordination mechanism. By analyzing the causes of the problems, this paper systematically discusses the key problems and coping strategies in the construction of ecologically clean small watershed. Through strengthening scientific planning, diversifying capital investment and enhancing public participation, strengthening the transformation of scientific and technological achievements to improve innovation ability, and establishing a cross-departmental collaboration platform, the smooth progress of ecologically clean small watershed construction is promoted, in order to provide strong support for the future construction practice.
