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研究了香料烟两个主要栽培类型, Basm a(芳香型)和 Sam sun(吃味型),在不同土壤湿度条件下的根系发育和根系活力,结果表明土壤适度干旱处理(土壤相对含水量60% )两类型的根系干重、吸收面积和活跃吸收面积的测定值均高于其他处理。在土壤相对含水量60% ~80% 的处理条件下, Sam sun 类型上述项目测定值均高于 Basm a 类型;而土壤相对含水量在45% ~35% 的条件下, Basm a 类型的项目测定值高于 Sam sun 类型。
The two major cultivars of oriental tobacco, Basm a and Sam sun, were tested for root development and root activity under different soil moisture conditions. The results showed that moderate soil drought treatment (soil relative water content 60 %) The root dry weight, the absorption area and the active absorption area of the two types were all higher than those of other treatments. Under the conditions of soil relative water content of 60% ~ 80%, the value of Sam sun type was higher than that of Basm a type; while the soil relative water content was 45% ~ 35%, Basm a type project Value is higher than Sam sun type.