本文针对干旱荒漠区樟子松种子育苗期间部分幼苗出现紫红色的问题，对樟子松苗圃地正常苗处土壤和紫红色苗处土壤性质进行了对比研究。结果表明：该区樟子松幼苗出现紫红色的主要原因是土壤缺磷。低磷地块部分幼苗生长正常是因为该处土壤砂粒含量高，透气性好，微生物活性强，这都有利于幼苗根系对磷的吸收。
Abstract
With the problem of partial seedlings of Pinus sytvestris var. mwngolica appear purple-red during growing seedlings in arid desert area, this paper has conducted the comparative research on soil properties of the plant nursery normal seedlings place and the purple-red seedlings place. The results show that, the main reason for the area Pinus sylvestris var. mongolica seedlings change to purple-red is that soil lacks for phosphorus. The low phosphorus land partial seedlings grow normally are because this place the soil sand content is high, the permeability is good, microorganism is active, these are all advantageous to the seedlings root absorb phosphorus.
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参考文献
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