文献类型：期刊文献

英文题名：Relationship between Leaf Scorch Occurrence and Nutrient Elements and Their Effects on Fruit Qualities in Chinese Chestnut Orchards

作者：Chen, Rongrong[1] Zhu, Jingle[2] Zhao, Jiabing[1,3] Shi, Xinru[1] Shi, Wenshi[4] Zhao, Yue[1] Yan, Jiawei[1] Pei, Lu[1] Jia, Yunxia[5] Wu, Yanyan[1] Liu, Haitao[6] Jiang, Zeping[7] Ma, Changming[3] Shi, Shengqing[1]

第一作者：Chen, Rongrong

通信作者：Shi, SQ[1];Ma, CM[2];Shi, WS[3]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Non Timber Forestry, Key Lab Nontimber Forest Germplasm Enhancement & U, Zhengzhou 450003, Peoples R China;[3]Hebei Agr Univ, Coll Forestry, Dept Forest Cultivat, Baoding 071000, Peoples R China;[4]Chinese Acad Forestry, Dept Achievement Transformat & Ind Dev, Beijing 100091, Peoples R China;[5]Zunhua Nat Resources & Planning Bur, Zunhua 064200, Peoples R China;[6]Huairou Chestnut Expt Technol & Extens Stn, Beijing 102206, Peoples R China;[7]Chinese Acad Forestry, Ecol & Nat Conservat Inst, Key Lab Forest Ecol & Environm Natl Forestry & Gra, Beijing 100091, Peoples R China

年份：2023

卷号：14

期号：1

外文期刊名：FORESTS

收录：;EI(收录号：20230513454861);Scopus(收录号：2-s2.0-85146749390);WOS:【SCI-EXPANDED(收录号:WOS:000915223900001)】；

语种：英文

外文关键词：chestnut; leaf scorch; soil elements; leaf elements; nut quality

摘要：Chinese chestnut (Castanea mollissima) is a multipurpose tree providing nuts and timbers, which holds an important position in the mountainous villages in China. However, leaf scorch disease is becoming more and more serious in the chestnut orchards of Yanshan Mountain areas, but the cause of occurrence is still unclear. In this study, the nutrient elements were analyzed from the leaves, roots, and surrounding soils of roots as well as the nut qualities in the healthy and scorched trees from two adjacent chestnut orchards. The results showed that the elements of nitrogen (N), iron (Fe), boron (B), and zinc (Zn) in leaves significantly increased in the scorched trees as well as N and B in roots, and potassium (K), and available potassium (AP) in soils, but leaf magnesium (Mg), root manganese (Mn), and soil Mg, copper (Cu), Fe, and B significantly decreased. Correlation analysis demonstrated that B, Zn, Mg, and Fe had a greater influence on the status of leaf health, and soil AK, K, Fe, B, and Cu had an impact on leaf B concentration. In addition, the occurrence of leaf scorch affected the nut sizes, contents of total soluble proteins and ascorbic acid as well as the catalase activity in the nuts. These results indicated that the disruption of soil-element balance may be one of the main causes resulting in the occurrence of leaf scorch, which would provide a theoretical basis and practical guidance for the prevention of chestnut leaf scorch disease.