TITLE:
Climatic Experiment on Guizhou Red Heart Kiwifruit Ulcer Disease
AUTHORS:
Zaixiang Chi, Xianju Long, Zhengjing Du, Xiang Sun, Qiuling Hu, Yuan Long
KEYWORDS:
Red Heart Kiwifruit, Ulcer Disease, Temperature Condition, Humidity Condition
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.7 No.4,
April
30,
2019
ABSTRACT: Using the climatic data, such as extreme minimum temperature and relative
humidity, in 15 bases in the main planting area of Guizhou Red Heart Kiwifruit
from December 1st to next April 30th, respectively, from 2010 to 2018,
combined with the monitoring of red heart kiwifruit ulcer disease, we analyze
the occurrence and prevalence of meteorological factors and dynamic characteristics
of the red heart kiwifruit ulcer disease in Guizhou, China. The results
showed that the main period of occurrence and prevalence of red heart
kiwifruit ulcer was from March to April. In winter, when the daily average
temperature of 5 d and above is ≤2°C, the daily extreme minimum temperature
is ≤−2°C, and the daily average relative humidity is ≥75%, it is beneficial
for the ulcer pathogen to lurk and propagate in the plant. It is suggested that
this meteorological condition should be used as an early warning indicator
for the prevention of ulcer disease of red heart kiwifruit, in order to actively
organize prevention after the emergence of early warning indicators to improve
the prevention and treatment effect. In spring, the average daily temperature
of 5 d and above is ≤18°C, and the daily average relative humidity is
≥80%, which is easy to induce ulcer disease. It can be seen that the first is the
winter climatic conditions to meet the breeding of ulcer disease, and then the
spring climatic conditions must also meet the rapid propagation of ulcer disease,
ulcer disease can occur, develop and popularize. It is of great practical
significance to carry out experiments on the relationship between the occurrence
of ulcer disease in Guizhou red heart kiwifruit and meteorological conditions.