山东林业科技
山東林業科技
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JOURNAL OF SHANDONG FORESTRY SCIENCE AND TECHNOLOGY
2012年
4期
1-4
,共4页
北非雪松%种源%年生长规律
北非雪鬆%種源%年生長規律
북비설송%충원%년생장규률
Cedrus atlantica Manetti%Provenances~ Annual growth rhythm
对北非雪松5个种源1年生播种苗的苗高和地径生长进行研究,5个种源的苗高都符合“S”型生长曲线,苗高生长可采用Logistic生长曲线拟合,同时可把生长期划分为4个阶段;地径生长规律与苗高生长不同,Logistic生长曲线拟合程度不高,不能作为生长期划分的依据。5个种源的苗高和地径生长规律相似,但苗高和地径生长量存在显著差异,美国加利福尼亚种源和亚利桑那种源苗高、地径生长量均高于突尼斯、阿尔及利亚和摩洛哥种源。
對北非雪鬆5箇種源1年生播種苗的苗高和地徑生長進行研究,5箇種源的苗高都符閤“S”型生長麯線,苗高生長可採用Logistic生長麯線擬閤,同時可把生長期劃分為4箇階段;地徑生長規律與苗高生長不同,Logistic生長麯線擬閤程度不高,不能作為生長期劃分的依據。5箇種源的苗高和地徑生長規律相似,但苗高和地徑生長量存在顯著差異,美國加利福尼亞種源和亞利桑那種源苗高、地徑生長量均高于突尼斯、阿爾及利亞和摩洛哥種源。
대북비설송5개충원1년생파충묘적묘고화지경생장진행연구,5개충원적묘고도부합“S”형생장곡선,묘고생장가채용Logistic생장곡선의합,동시가파생장기화분위4개계단;지경생장규률여묘고생장불동,Logistic생장곡선의합정도불고,불능작위생장기화분적의거。5개충원적묘고화지경생장규률상사,단묘고화지경생장량존재현저차이,미국가리복니아충원화아리상나충원묘고、지경생장량균고우돌니사、아이급리아화마락가충원。
Annual growth rhythm of Cedrus atlantica Manetti seedlings from five provenances were studied in this paper. The results showed that the growth patterns of height of five provenances were similar to 'S' curves and could be fitted with Lo- gistic equation. And by equation the four stages could be devided for the height diameter; while the ground diameter is different from the height diameter,and the Logistic fitting degree is not high,so we could not derided the growth stages by the ground diameter. The rhythm of the height and ground of the Cedrus atlantica Manetti seedlings five provenances were same, hut the growth have the siginificant differences, the height and the ground diameter of the seedings from California and Arizna of the The Unites States are better than the seedings from Tunisia, Algeria and Morocco.