不同土壤条件对小甘菊根系生长的影响

为了使小甘菊在园林绿化中得到较好应用,在自然生境和栽培条件下对小甘菊生长期内土壤的水分动态变化、p H值和主要养分含量进行了监测,并研究了不同土壤条件对小甘菊根系分布特征的影响。结果表明：3个研究区的土壤养分含量存在显著差异,其中,三坪农场土壤养分条件最好,雅山相对较差;土壤水分变化存在差异,其中,雅山土壤含水量变化幅度最大,人民公园最小;水分对根系生长的影响呈显著水平,在水分轻度缺乏时,小甘菊根系显著伸长,且向垂直方向伸展;土壤类型以及主要养分含量也影响小甘菊的根系生长。

The Influence of Different Soil Conditions on Root Growth of Cancrinia discoidea (Ledeb.) Poljak

In order to get a better application of Cancrinia discoidea in the landscape,the soil moisture dynamic change,p H and main nutrient content of Cancrinia discoidea in growing period under the nature habitat and cultivation condition were measured to study the influence of soil condition on the root distribution characteristics of Cancrinia discoidea.The results showed that the three study areas had significant differences in soil nutrient content, among them, the soil nutrient conditions of Sanping farm was best, and Yashan was relatively poor.There were differences of three study areas on soil moisture change,the soil moisture variation of Yashan was maximum,and that of People＇s Park was minimum.The effect of moisture on root growth was significant,in mild deficiency of water,the root of Cancrinia discoidea significantly elongated to the vertical direction,the soil types and main nutrient content also affected root growth of Cancrinia discoidea.