擬赤楊 的英文怎麼說
中文拼音 [nǐchìyáng]
擬赤楊
英文
alniphyllum fortunei-
Through the stand investigation by setting up the sample site, the investigation results showed that the average dbh of 15 - year - old alniqhtllm fortunei planted under nature was 60 % larger than that of 17 - year - old pinus massoniana plantation under the same condition, the average tree height of the above was 38 % larger than that of the latter, the average single - tree volume of the above was 3. 2 times higher than that of the latter, the above showed the absolute dominance in stands
摘要設立標準地進行林分調查，在標準地中選取擬赤楊標準木進行樹干解析，採用生長對比方式分析擬赤楊在馬尾松人工林中的生長情況，調查結果表明，在同一環境條件下， 15年生天然下種的擬赤楊比17年生馬尾松人工林平均胸徑大60 % ，平均樹高高38 % ，平均單株材積大3 . 2倍，在林分中表現出絕對優勢。It is concluded that the mixed stand can be able to be self - rich in soil fertility, which benefit the maintenance and improvement of site fertility under chinese fir plantation
表明杉木擬赤楊混交林具有良好的培肥土壤功能，對杉木人工林的地力維持和提高有重要意義。Abstract : through a study on soil aggregate composition, nutrient status and enzymatic activity under mixed forest of chinese fir alniphyllum fortunei and pure stand of chinese fir, the results indicated that, compared to pure stand, the soil structural property was ameliorated, the soil capacity of nutrient supplying and was improved, and the soil enzymatic activity were enhanced
文摘:通過對杉木擬赤楊混交林及杉木純林土壤團聚體結構、土壤養分狀況及酶活性的研究表明，與杉木純林相比，混交林土壤結構性能得到改善，供肥和保肥能力加強，各種土壤酶活性提高，土壤肥力較好。
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