摘要
1999年春季，大连地区约有2000多公顷日本黑松林相继出现不同程度的松枝枯黄，乃至全株枯死现象，调查结果表明：这次灾害是一次气候异常引起的自然灾害，病虫害等不是造成该灾害的主要原因。
About 2000hm^2 of Pinus thunbergii became withered and even died in Dalian region during the spring of 1999. The bureau of forestry in Dalian invited some relevant experts to investigate the reason. The results showed that there was the natural calamity caused by weather abnormality. Other thing such as plant diseases and insect damage are not the main reason.
出处
《沈阳农业大学学报》
CAS
CSCD
1999年第3期260-262,共3页
Journal of Shenyang Agricultural University
关键词
日本黑松
气候因素
病虫害
枯黄
枯死
Pinus thunbergii
weather factor
plant diseases and insect damage
