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作物的种植密度、各生育阶段群体大小与光能利用如何,与产量高低密切相关,是农业生产的重要技术之一。小麦群体是众多个体的综合,因而大多属概率型,适于数学处理。用数学模拟或分析,求出各因素间的函数关系,使难以用文字描述的复杂情况走上定量的刻画,有利于进行合理运筹。我们根据洛阳市一些大队科研组多年对郑州761小麦品种的栽培试验实践,导出了群体动态的理论曲线方程,经济产量与生物产量指数函数式;穗数,叶面积,产量三者之间的协调关系(解决以生产定穗和以光定穗的结合问题)。这些数量化指标,在理论上可以帮助我们明确群体动态的变化规律,进而为控制合理群体提供比较严密的数量化的推理原则;在生产实践上,可帮助我们确定最适宜的群体动态指标,为合理的栽培技术措施提供科学依据。
Planting density, population size and light energy utilization at each growth stage are closely related to the production level, which is one of the important technologies in agricultural production. Wheat population is the synthesis of many individuals, and most of them are probabilistic, suitable for mathematical processing. Mathematical simulation or analysis, find the functional relationship between the various factors, making it difficult to describe the complex situation with a quantitative description of character, is conducive to the rational operation. According to the cultivation and experiment practice of Zhengzhou 761 wheat cultivars in research groups of some brigades in Luoyang for many years, we have derived the theoretical curve equation of population dynamics, the exponential function of economic yield and biological yield; the coordination between the number of spikes, leaf area and yield Relationship (to solve the combination of producing fixed ears and fixed ears). These quantitative indicators in theory can help us to clarify the changing laws of group dynamics and then provide more rigorous quantitative reasoning principles for controlling reasonable groups. In production practice, we can help to determine the most appropriate group dynamic indicators Reasonable cultivation techniques and measures to provide a scientific basis.