摘要
采用田间小区试验,研究了4种烤烟栽培方式对土壤环境与根系生长的影响。结果表明,盖膜能提高旺长期之前的土温5℃左右;盖膜+定根水2 kg/株处理对于保持烤烟生育前期的土壤含水量比较有利;不揭膜处理和较高的墒高使土壤容重增大,孔隙度变差,影响土壤的通透性;盖膜有利于移栽早期烟株根系的发育,但揭膜处理促进旺长期至现蕾期根系的发育,墒高越高根系体积越大,浇定根水的量越多,越有利于根系的发育。
The field experiments were conducted to study the effects of planting pattern on soil environment and root properties of flue - cured tobacco. The results showed that the plastic film mulching could increase the temperature of soil before the period of vigorous growing stage by 5degree compared with the soil uncovered by plastics. Irrigating fixed - root water （2 kilogram/per plant） was helpful for moisture in the soil in bearing prophase of flue -cured tobacco by plastic film mulching. Film covering and high soil moisture content made a bigger soil bulk density, which made extent porosity of soil, and affected the permeability of soil So the film uncovering was carried out in the production, and selected suitable earth fullow higher. In short, plastic film mulching was good for the root early growth in early transplanting period. But film - uncover promoted the root development in the period from vigorous growing stage to budding.. The higher the soil mois- ture content was, the bigger the root system became, and more fixed - root water were needed , which were good to the root develooment.
出处
《作物研究》
2012年第6期654-659,共6页
Crop Research
关键词
烤烟
栽培方式
土壤环境
根系性状
Flue -cured tobacco
Planting pattern
Soil environment
Root properties
