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对浙江省5个杉木1代种子园结实、气候和土壤条件进行了多年监测。该地区杉木种子园种子产量和品质的影响因子可总分为生物因子、环境因子和人为因子(栽培管理)3个方面。无性系遗传特性(即生物因子)是影响种子园产量的基础条件;而种子产量年度变动的首要影响因子是球花授粉不良,其次是病虫危害,两者可造成球果损失65%左右。生物(遗传)因子和自然环境因子均是杉木种子产量和品质的客观影响因子,而人为的栽培管理是提高种子产量和品质的主动影响因子。建园初期注意选择遗传增益大、结实量多的无性系建园,无性系配置时注意小区内花期的一致性,以提高球花授粉机率;选择地形开阔、坡度平缓、肥力中等偏上的阳坡或半阳坡建园。种子园投产后,每年坚持人工辅助授粉和病虫害防治十分重要;其次,科学施肥和结实盛期的修枝疏伐也不可小视。通过良好的栽培管理(人为因子的主动影响),在最大程度上制约不良环境等因子的影响,从而保证种子园种子的持续稳产高产。
The fir seed, the climatic and soil conditions of 5 Chinese fir 1st-generation seed orchards in Zhejiang Province were monitored for many years. The factors influencing the seed yield and quality of Chinese fir seed orchard can be divided into three aspects: biological factor, environmental factor and human factor (cultivation and management). The genetic characteristics of clones (ie, biological factors) are the basic conditions that affect the yield of seed orchard. The main influencing factors of annual variation of seed yield are poor pollination of pollen germplasm, followed by pests and diseases, both of which can cause about 65% loss of cones. Both biological (genetic) factors and natural environmental factors are objective factors affecting seed yield and quality of Chinese fir, while artificial cultivation and management are active factors that increase seed yield and quality. At the initial stage of construction of the park, pay attention to selecting the cloned garden with large genetic gain and strong sturdiness, and pay attention to the consistency of the flowering period in the clonal arrangement to improve the pollination chance of the pollen in the clonal arrangement. Choose the open terrain, gentle slope, Slope or half-slope built park. After the seed orchard is put into operation, it is very important to insist on artificial auxiliary pollination and pest and disease control every year. Secondly, pruning and thinning of scientific fertilization and flourishing period should not be underestimated. Through good cultivation and management (the active influence of human factors), the impact of factors such as adverse environment is restricted to the maximum extent so as to ensure the sustained and stable high yield of seed orchard seeds.