Effects of container seedling quality on outplanting performance of Quercus variabilis

doi:10.3969/j.issn.1000-2006.201702024

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2018, Vol. 42 ›› Issue (01): 188-192.doi: 10.3969/j.issn.1000-2006.201702024

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Effects of container seedling quality on outplanting performance of Quercus variabilis

SUN Qiaoyu, LIU Yong^*, CHEN Chuang, SHI Wenhui, WANG Weiwei, CHEN Xiao

Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083,China

Online:2018-03-30 Published:2018-03-30

Abstract

Abstract: 【Objective】This research was conducted to investigate the effects of irrigation method and container depth on seedlings growth and nutrient status after outplanted one year in the field. We evaluated the nursery performance and afforestation performance of seedlings to propose a scientific foundation for cultivating Quercus variabilis Blume container seedlings in the nursery. 【Method】Seedlings cultivated in D40(6.4 cm(container caliber)× 25 cm(container caliber))and D60(6.4 cm(container caliber)× 36 cm(container caliber))containers with overhead irrigation and subirrigation in the nursery for one year were outplanted in the field. We investigated the survival, morphology, and nutrient status of plants after outplanted one year in the field. 【Result】①Subirrigation improved survival of Q. variabilis seedlings after outplanted one year in the field, is about 98%. ② Height and root-collar diameter of plants in D60 containers(77.3 cm, 6.87 mm)grew larger than those in D40 containers(70.1 cm, 6.34 mm). ③ Subirrigation improved shoot biomass by 22% after outplanted 1 year in the field. Shoot, root, and total biomass of seedlings cultivated in D60 containers were improved by 22%, 16% and 18% relative to that of seedlings cultivated in D40 containers, respectively. ④Subirrigation improved shoot phosphorus concentration by 17% after outplanted one year in the field. ⑤ Survival of seedlings outplanted one year in the field was significantly positively correlated with nutrient content of nursery seedlings. Height and biomass of seedlings after outplanted one year in the field were significantly positively correlated with biomass and nutrient content of nursery seedlings. 【Conclusion】 Subirrigation improved plant survival after outplanted 1 year in the field and the morphology of seedlings cultivated in D60 containers was greater than those cultivated in D40 containers. Considering performance of seedlings cultivated in the nursery and outplanted in the field, subirrigation and D60 containers are viable alternatives for Q. variabilis cultivated in the nurseries.

CLC Number:

S723.6

SUN Qiaoyu, LIU Yong, CHEN Chuang, SHI Wenhui, WANG Weiwei, CHEN Xiao. Effects of container seedling quality on outplanting performance of Quercus variabilis[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2018, 42(01): 188-192.

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Effects of container seedling quality on outplanting performance of Quercus variabilis

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