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黄藤人工林密度效应 被引量:14
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作者 杨锦昌 许煌灿 +2 位作者 尹光天 冯昌林 卢立华 《林业科学》 EI CAS CSCD 北大核心 2006年第4期57-61,共5页
设置造林规格为3m×3m(A)、2m×3m(B)、1m×3m(C)和1m×2m(D)4个水平的密度试验,分析造林密度对黄藤人工林生长与收获的影响。结果表明:萌蘖力、藤丛的母茎长和总茎长均随年龄的增加而增大,随造林密度的增加而递减,密... 设置造林规格为3m×3m(A)、2m×3m(B)、1m×3m(C)和1m×2m(D)4个水平的密度试验,分析造林密度对黄藤人工林生长与收获的影响。结果表明:萌蘖力、藤丛的母茎长和总茎长均随年龄的增加而增大,随造林密度的增加而递减,密度的不同对6年和14年时的萌蘖力分别造成显著和极显著差异,而对植株母茎长无显著影响,但对14年时藤丛总茎长则有极显著影响;在14年时,林分自疏率随密度的增加而增加,不同密度水平间有极显著差异;林分直径大致随着密度的增加而递减,不同密度间有显著差异,但造林密度减小或增大至一定程度时对直径所产生效应并不明显;单丛产量随密度的增加而减少,受造林密度影响最大,除密度A与B及C与D间无显著差异外,其他密度间均达到显著或极显著差异;藤林总产量随着密度的增大先增加后逐步减少,不同密度间无显著差异,但以密度为3333株·hm-2时的总产量最高。在营建黄藤人工林时,可根据实际情况采用3m×1m或3m×2m密度,从而获得较高的藤产量,便于藤林的经营管理。 展开更多
关键词 黄藤 造林密度 萌蘖力 直径 茎长
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单叶省藤组培家系的生长特性分析 被引量:5
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作者 杨锦昌 许煌灿 +2 位作者 尹光天 曾炳山 冯昌林 《林业科学》 EI CAS CSCD 北大核心 2006年第2期120-124,共5页
The growth character of 4 tube seedling families, namely, CS3, CS5, CS10 and CS11 of Calamus simplicifolius was analyzed through the comparitive experiment with normal seedlings(CK). The result showed that at the age ... The growth character of 4 tube seedling families, namely, CS3, CS5, CS10 and CS11 of Calamus simplicifolius was analyzed through the comparitive experiment with normal seedlings(CK). The result showed that at the age of 1, the seedling’ height of CS3 and CS5 was higher than that of both CS10 and CS11, gaining highly significant difference while the height of CS10 and CS11 was higher than that of CK at significant and extremely significant level respectively. After afforestation, the survival rate of 4 families decreased rapidly at first, and then decreasing gradually slow down, finally, the rate kept steady with year increasing. Survival rate varied a bit, but no significant difference was found among families. Tissue culture families started to sucker more identically and earlier than normal seedlings. As for suckering rate and mean number of sucker shoot, tissue culture families were higher than normal seedlings, and then the sequence of suckering ability, CS11>CS10>CS5>CS3 was arranged. The total stem number of the clump was consistent with suckering ability among families where CS11 was the largest, CS10 and CS5 was larger, and CS3 as well as CK was the smallest, but no significant difference appeared. Mean length of mother stem and mean total length of rattan clump differed significantly at the level of 0.05 and 0.01 among families. Based on the variance analysis and multiple comparisons, two types of tissue culture families, superior type and common one were classified. 展开更多
关键词 单叶省藤 组培家系 生长性状 萌蘖力
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繁华烂漫十旬期——谈紫薇在园林中的应用 被引量:1
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作者 王世英 刘丹 《农业科技与信息(现代园林)》 2008年第2期68-70,共3页
紫薇因其树形优美、花期长、花色艳丽;树干光洁、筋脉挺露;叶形秀丽、叶色亮丽、秋天变黄或红,而使其花、干、叶都有独特的观赏价值,故在园林中常以孤植、对植、丛植等多种栽植形式被广泛应用;因其还具有萌蘖性强、生长较慢、寿命长、... 紫薇因其树形优美、花期长、花色艳丽;树干光洁、筋脉挺露;叶形秀丽、叶色亮丽、秋天变黄或红,而使其花、干、叶都有独特的观赏价值,故在园林中常以孤植、对植、丛植等多种栽植形式被广泛应用;因其还具有萌蘖性强、生长较慢、寿命长、能吸收有毒有害气体及滞尘的功能而被用作盆景树、小型行道树和工厂绿化树种。 展开更多
关键词 紫薇 园林 花期 萌蘖力 观赏价值
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