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作者对黄淮海及长江中游平原境内水热条件与地貌成因不同的6个平原单元进行了重点考察,并对林木生长有关的11种土壤进行了野外调查与土壤理化分析,按养分含量与障碍因子综合评价了土壤肥力与宜林特性;应用带状和块状样地调查法,测定各类土壤上多个样地内标准木的树高、胸径和单株材积年平均生长量,再求算各类土壤上的平均值。土壤与林木生长关系的对比研究表明,不同杨树品种和无性系以及其他树种,在其适生的土壤上可获得较高的生长量,这有助于该地区正确选择宜林树种和合理地进行良种推广工作,做到因地适树,提高平原造林质量。
The author investigated 6 flat units with different hydrothermal conditions and geomorphic factors in the Huanghuai Sea and the middle reaches of the Yangtze River and conducted field surveys and soil physical and chemical analyzes of 11 kinds of soils which are related to forest growth. According to nutrient contents and obstacles Comprehensive evaluation of soil fertility and Yilin characteristics; using strip and block sample survey method to determine the height and diameter at breast height, The average of soils on the soil. A comparative study on the relationship between soil and tree growth shows that different poplar species, clones and other tree species can obtain higher growth in their suitable soils, which helps to properly select the appropriate tree species in this area and reasonably Carry out the work of popularizing seeds and trees, and improve the quality of reforestation in the plain.