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在水稻生产中,秧苗是基础,培育壮秧是水稻高产栽培的技术关键。关于壮秧的形态指标,过去曾提出过扁蒲秧、三叉秧、带蘖秧、健壮秧等,但仅是秧苗在形态特点上的定性描述,缺乏数量概念,不易规范化。近年来,凌启鸿等根据秧苗生理特点和器官同伸规则提出用个体叶蘖基本同伸,群体茎蘖停滞增长(多数个体停止分蘖)叶龄期作为适龄移栽的壮秧指标。为了阐明群体茎蘖滞增叶龄期秧苗的特点,以及群体茎蘖滞增叶龄期、密度和壮秧的关系,明确移栽的适宜叶龄期与最适播量,特进行本试验,以便为大面积培育壮秧提供科学依据。
In rice production, the seedling is the foundation, and the cultivation of strong seedlings is the key technology of high-yielding rice cultivation. On the morphological indicators of strong seedlings, in the past had proposed flat Pu Yang, trigeminal seedlings, with tillers, robust seedling, etc., but only the qualitative description of the seedling characteristics, the lack of quantitative concepts, not easy to standardize. In recent years, Ling QI Hong and other organs according to the physiological characteristics of seedlings and extension of the same rules are proposed with the basic extension of the individual tillers, stalks stagnant growth (most individuals to stop tillering) leaf age as a suitable transplant age seedling indicators. In order to elucidate the characteristics of stagnant-growing leaf-seedling seedlings and the relationship between the increasing of stem-tillering and increasing leaf age, density and strong seedling, the appropriate leaf age and optimum sowing rate of transplanting were clarified. In order to provide a scientific basis for large-scale cultivation of strong seedlings.