土壤养分变化对不同种源杉木幼苗生长的影响

Effects of Soil Nutrient Change on the Growth of Cunninghamia lanceolata Seedlings from Different Provenances

本文以6个国家级林木良种基地第3代种子园1年生杉木实生裸根苗为研究对象,研究不同种源杉木在土壤养分变化下的生长情况。结果表明,1.官庄种源在T_(6)、T_(5)、T_(4)、T_(3)和T_(2)处理时,苗高比T_(1)(CK)处理分别高18.9%、12.7%、5.5%、2.3%和0.5%;T_(1)(CK)处理地径最大,为13.8 mm。2.将乐种源在T_(4)、T_(2)、T_(5)、T_(3)和T_(6)处理时,苗高比T_(1)(CK)分别高16.8%、10.2%、7.2%、3.0%和2.8%;T_(1)(CK)处理地径最大,为11.9 mm。3.尤溪种源在T_(6)、T_(2)和T_(5)处理时,苗高比T_(1)(CK)处理分别高于2.8%、1.1%和0.9%;T_(1)(CK)处理地径最大,为13.5 mm。4.华侨种源在T_(6)和T_(3)处理时,苗高比T_(1)(CK)处理分别高12.1%和8.3%;T_(3)处理地径比T_(1)(CK)处理大16.8%。5.洋口种源在T_(6)、T_(5)、T_(3)和T_(2)处理时,苗高比T_(1)(CK)处理分别高12.7%、7.3%、4.2%和3.5%;T_(5)处理地径比T_(1)(CK)大1.7%。6.卫闽种源在T_(4)、T_(2)和T_(6)处理时,苗高比T_(1)(CK)处理分别高11.4%、7.4%和2.5%;T_(1)(CK)处理地径最大,为12.6 mm。

In this paper,1-year-old bare-rooted Cunninghamia lanceolata seedlings from the third generation seed orchards of 6 national forest tree improved seed bases were the study objects and a study was made on the growth of the seedlings from different provenances in conditions of soil nutrient change.The results showed:1.The seedlings from Guanzhuang provenance,when treated with T_(6),T_(5),T_(4),T_(3) and T_(2),were higher by 18.9%,12.7%,5.5%,2.3%and 0.5%respectively than those treated with T_(1)(CK);the seedlings treated with T_(1)(CK)had the biggest basal diameter of 13.8 mm.2.The seedlings from Jiangle provenance,when treated with T_(4),T_(2),T_(5),T_(3) and T_(6),were higher by 16.8%,10.2%,7.2%,3.0%and 2.8%respectively than those treated with T_(1)(CK);the seedlings treated with T_(1)(CK)had the biggest basal diameter of 11.9 mm.3.The seedlings from Youxi provenance,when treated with T_(6),T_(2) and T_(5),were higher by 2.8%,1.1%and 0.9%respectively than those treated with T_(1)(CK);the seedlings treated with T_(1)(CK)had the biggest basal diameter of 13.5 mm.4.The seedlings from Huaqiao provenance,when treated with T_(6) and T_(3),were higher by 12.1%and 8.3%respectively than those treated with T_(1)(CK);the basal diameter of the seedlings treated with T_(3) was bigger by 16.8%than that of those treated with T_(1)(CK).5.The seedlings from Yangkou provenance,when treated with T_(6),T_(5),T_(3) and T_(2),were higher by 12.7%,7.3%,4.2%and 3.5%respectively than those treated with T_(1)(CK);the basal diameter of the seedlings treated with T_(5)was bigger by 1.7%than that of those treated with T_(1)(CK).6.the seedlings from Weimin provenance,when treated with T_(4),T_(2) and T_(6) were higher by 11.4%,7.4%and 2.5%respectively than those treated with T_(1)(CK);the seedlings treated with T_(1)(CK)had the biggest basal diameter of 12.6 mm.