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本文应用此较生态学方法,对乌桕在云南几个典型生态环境的生长、产量及叶片显微结构进行研究,并对20周龄苗进行水分胁迫试验,发现乌桕耐旱性强,主要表现在(1)随着干燥度增大,叶片形态及显微结构向旱生演化;(2)苗期耐旱性与滇橄榄、三叶豆等耐旱植物相近;(3)在元谋、东川等干热河谷生长发育正常,单位冠幅面积产籽量高于绥江等主产区。据此,对乌桕耐旱性和适宜栽培区提出新思考。
In this paper, the comparative ecological method was used to study the growth, yield and leaf microstructure of Achnatherum splendens in several typical ecological environments in Yunnan. The water stress test of 20-week-old seedlings was carried out. The results showed that (1) With the increase of dryness, leaf morphologies and microstructures evolved into xerophytes; (2) Drought tolerance at seedling stage was similar to drought-tolerant plants such as Olive and Soybean; (3) Such as dry and hot valley growth and development of normal, the unit area crown seed production is higher than the main producing areas such as Suijiang. Based on this, a new thinking on the drought tolerance and suitable cultivation area of Uighur was proposed.