|Table of Contents|

Preliminary Study on the Effects of Branch Angle and Branch Height on Disease and Sunburn of Precocious Walnut Fruit

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年21
Page:
20-24
Research Field:
Publishing date:

Info

Title:
Preliminary Study on the Effects of Branch Angle and Branch Height on Disease and Sunburn of Precocious Walnut Fruit
Author(s):
MA Huabing1; 2; 3; CHEN Liying1; 2; 3; QI Guohui2; 3; 4; QIANG Jingsha1; 2; 3
(1.Hebei Lyuling Fruit Co.Ltd.,Xingtai,Hebei 054300;2.Institute of Walnut Industry Technology of Hebei Province (Xingtai),Xingtai,Hebei 054300;3.Research Center for Walnut Engineering and Technology of Hebei,Xingtai,Hebei 054300;4.College of Forestry,Agricultural University of Hebei,Baoding,Hebei 071000)
Keywords:
branch angle; branch height; fruit diseases; sunburn; nut quality
PACS:
-
DOI:
10.11937/bfyy.20191011
Abstract:
In order to explore the agronomic measures to prevent and control the disease and sunburn occurrence of precocious walnut fruits,full fruit period walnut trees of ‘Lyuling’ were used as materials to study the disease and sunburn of fruits grown on branches at different angles and heights.The results showed that the total fruit number,good fruit number and good fruit rate decreased with the branch angle increased,and the diseased fruit rate increased,nevertheless,the sunburned fruit rate had no the significant difference,and the nut quality decreased.The good fruit rate,nut weight,nut diameter and kernel fat content of branch angle 30° were 30.71%,15.84 g,38.18 mm and 67.68%,respectively.Compared with the branch height below 1.2 m,the total fruit number and the good fruit number increased significantly than branch height above 1.2 m,the diseased fruit rate decreased significantly than branch height above 1.2 m,and the sunburned fruit rate increased significantly than branch height above 1.2 m,and the nut quality had no significant difference.Considering the branch bending angle and the branch growing height,among the branch height above 1.2 m,the branch bending angle 30° had absolute advantages in total fruit number,good fruit rate,diseased fruit rate,nut weight and kernel fat content,which were 13.50,42.00%,46.50%,16.48 g and 68.00% respectively,followed by the branch bending angle 60°,but the sunburned fruit rate of the two treatments were higher,which were 11.50% and 12.59%,respectively;among the branches below 1.2 m,the nut quality of the branch bending angle 30° was higher,and there had no significant difference in other indexes.Comprehensive analysis showed that in order to ensure high quality and high yield,the best angle for branches above 1.2 m was 30°-60° and the best angle for branches below 1.2 m was 30°.

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Last Update: 2019-12-05