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近2年来辽阳地区秋季降雨较多,不少山楂园的土壤含水量呈饱和状态,特别是土壤粘重的平地山楂园,如不及时排水防涝,极易导致山楂树根系渍水而死亡。1986年春,在灯塔县张台子镇前营子平地山楂园调查结果表明:该山楂园因水涝植株受害率为10.4%,其中植株死亡率为5.3%,受害严重的地块死亡率则高达15.5%。另在某些山地果园,如鸡冠山乡等一些果园因排水不好也有不同程度的死树现象。
In the past two years, there was more rainfall in autumn in Liaoyang area. Many of the hawthorn garden’s soil moisture content was saturated, especially the hawthorn garden with flat soil. If the waterlogging did not drain in time, it could easily lead to waterlogging and death of hawthorn roots. In the spring of 1986, a survey of Hawthorn Park in Yingziping, Zhangtaizi Town, Beacon County showed that the damage rate of the Hawthorn Park due to waterlogging was 10.4%, of which the plant mortality rate was 5.3% and that of the severely damaged land block was as high as 15.5 %. Another in some mountain orchards, such as Jiguan Shan and some other orchards due to poor drainage also have varying degrees of dead trees.