不同基质对狭叶四照花苗期生长的影响

用两种基质栽培狭叶四照花一年生幼苗,结果表明苗木的株高、地径生长及生物量有明显差异,且持续表现在二年生、三年生的苗木生长上.两种处理的苗木其苗高和地径以及生物量在当年差异最大,以后差距逐渐缩小.圃地苗的一年生和三年生苗木生物总量远高于沙床苗.一年生苗的茎生物量在营养器官中所占比例最低,而三年生苗茎的生物量所占比例最大.

Effect of Different Martrix on Growth of Dendrobenthamia angustata on Seedling-stage

Annual seedlings of Dendrobenthamia angustata were planted in two different cultivable mediums.The results indicated that the seedling height,shoot diameter above the ground and the biomass of the seedlings planted in soil culture were obvious higher than that of in the sand culture.The difference lasted 2-3 years.The effects were the most significant in the first year,and the amounts of dissimilarity gradually reduced to the second and the third year.The proportion of stems in vegetative organs was the smallest in the first year,and the biggest in the third year.old seedlings had proportion.The root system of Dendrobenthamia angustata was strong.