苗盘高度和育苗密度对烟苗生长发育的影响

塑料泡沫育苗盘作为漂浮育苗方式是不可或缺的基础设施,长期的化工制造不仅造成生态环境的污染,同时造成育苗成本的不断提高。本研究以降低育苗成本,培育优质壮苗为目的,研究了不同苗盘高度和育苗密度对烟苗生长发育及病虫害发生的影响,并分析了轻简育苗的经济效益。结果表明:以苗盘高度5cm、育苗密度160株/盘的育苗盘所育烟苗根系发达,苗株健壮,病害发生率低,综合生理生化指标优于常规育苗盘所育烟苗,经济效益提高1.95元/盘。本试验结果可为环保材料矮化育苗盘开发的规格提供参考。

EFFECT OF SEEDLING DISK HEIGHT AND SEEDLING DENSITY ON TOBACCO SEEDLINGS GROWTH

Plastic seedling-raising dish is as a way of floating seedling indispensable infrastructure. Long-term chemical manufacturing not only pollutes the ecological environment, also causes the increase of the seedling cost. In order to reduce the cost of seedling and cultivated qualified seedling, effects of different seedling plate height and seedling density on the seedlings growth and the occurrence of pest and disease were studied, and economic benefits of simple and portable seedling were analyzed as well. Results showed that comprehensive physiological and biochemical indexes of seedlings plate with 5cm height, seedling density of 160plants/dish seedling-rasing disks and tobacco seedlings root developed, seedling plants robust, and the low disease rate, comprehensive physiological and biochemical indexes were superior to the conventional seedling disks and tobacco seedlings, the economic benefit increased by 1.95RMB/dish, and could become environmental protection material seedling dish of the specifications of the development of dwarf reference index