摘要
以沈农9660号水稻品种为试材,随机选取一个蒸渗仪(面积为2.5m×2m)进行根系生长观测试验。采用水洗法,测定水稻根系重量根密度。运用非称重式钢筋混凝土蒸渗仪的蒸腾量观测结果,在总结国内外作物根系吸水模型研究的基础上,运用有限差分法对有根系吸水条件下的稻田土壤水分运动进行了模拟,导出了水稻根系吸水模型。
From the observations of root growth of paddy cultivated in the transparent plexiglass micro-lysimeter with 30 cm long and 30 cm width and 80 cm high, the separate production functions of paddy root system in both vertical and horizontal directions were developed, and the distribution law of paddy roots was analyzed. On the basis of generalization of studies on absorbing models of plant root system both at home and abroad, the author simulated the soil moisture movement in the paddy field under the condition of root absorbing and developed paddy root absorbing model for the first time.
出处
《灌溉排水学报》
CSCD
北大核心
2004年第1期56-58,61,共4页
Journal of Irrigation and Drainage
关键词
水稻
根系
根密度
吸水模型
paddy
root
root density
water-uptake model
