摘要
土壤的供氧状况明显影响切花月季的产量和质量．在大棚土壤常规栽培条件下，为了使生长基质保持长期稳定的供氧能力，解决灌溉水的定量化和均匀化，我们在改良土壤的同时，设计了切花月季平面微灌栽培系统，并对其水力学特性、微灌喷头的有效性、根系垂直分布、微灌区内温度与湿度的动态变化等进行了研究。结果表明，微灌系统中流量与压力的水力学方程为ｑ＝２０．８６Ｈ０．６９，有效半径Ｒ＝８０ｃｍ，覆盖死角α＝１０°。与对照相比，微灌区１０～３０ｃｍ基质层内的有效根量大而分布均匀；切花月季不同群体层高内的温度相对较低、湿度较大；平均年产花量高于对照４８％，增益效果显著。
The effect of oxygen supply situation in soil on the fond and quality of cut roses is notable. In order to keep the growth medium a good oxygen capacity for a long time and disolve the problem of irrigation water both quantitation and equality,while the soil structure was developed,the horizontal microirrigation system for cut rose culture was designed. Meanwhile, its hydraulic features, characterristics of noz- zle,vertical distribution of roots,and the dynamic changes both temperature and humidity in microirrigation block,were carried out. The research results indicated that the hydraulic equation between flux and pressure is q= 20. 86HO.69,the effective diameter of nozzle is 160cm,and the cover dead angle is 10 degrees. Compared with the contrast,the effective root quantity is larger and more reasonable in 10 - 30cm medium layer of microirrigation block,the lower temperature and higher humidity is existed in various community height of rose,and the mean cut flowers yield is 48% over the contrast.
出处
《江苏林业科技》
1995年第2期7-10,26,共5页
Journal of Jiangsu Forestry Science & Technology
关键词
切花
月季
平面微灌
基质供氧
水力学方程
cut rose
horizontal microirrigation
oxygen supply in medium
draulic equation
gain
