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1980-1989年,以改善北京地区高产小麦产量潜力为目标,对冠层形成和结构以及与高产有关的几个生理问题进行了系统研究。首先确定了选用中间类型叶型的品种、在20cm行距和基本苗15-20万/亩对产量最有利的基础上,提出了一整套包括形态和生理在内的冠层性状指标,为亩产45kg水平的小麦确定了一个框架结构和形成模式。还研究了叶面积指数变化与光透射、生育阶段持续期与粒数和粒重、育性与脱落酸水平变化等之间的关系,高温和水分胁迫的影响,以及不同衰老类型在衰老过程中的形态和生理变化。为制定育种目标和方案、高产栽培措施,提供了生理方面的依据。最后对北京地区高产小麦品种的叶型和株型、粒数和粒重、源和库在决定产量上的相对重要性等问题进行了讨论。本研究在生理与育种、栽培等学科结合的研究上取得了有益的进展。
In 1980-1989, with the goal of improving the yield potential of high-yielding wheat in Beijing, systematic studies were conducted on the formation and structure of canopy and several physiological problems related to high yield. First determine the selection of the middle type of leaf type varieties, 20cm row spacing and basic seedlings 15-20 million / acre yield the most favorable basis, put forward a set of including shape and physiology, including the canopy trait index, per mu The level of 45 kg of wheat identified a framework structure and pattern of formation. The relationship between changes of leaf area index and light transmittance, the duration of growth stage and the number and weight of grains, fertility and abscisic acid level, the effects of high temperature and water stress, and the effects of different senescence types on the aging process The morphological and physiological changes. To develop breeding goals and programs, high-yielding cultivation measures, provide a physiological basis. Finally, the issues such as leaf type, plant type, grain number and grain weight, and the relative importance of source and sink in yield determination of high yield wheat cultivars in Beijing were discussed. The research has made some beneficial progress in the research of the combination of physiology, breeding and cultivation.