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在辽宁东部山区人工红松林中,设置了10处固定观测点,对红松落针病(Lophodermium maximum)的流行规律进行了定位研究。该病害于每年4月下旬开始显露病状,5月中旬开始落叶,5月下旬至6月上旬为落叶盛期;罹病针叶落地后,很快出现子囊盘,于6月下旬开始开裂,7月下旬为盛期。子囊孢子飞散盛期为5月下旬至8月上旬,高峰期为7月下旬;在距地面0.3至4.8m的空间范围内子囊孢子的分布无明显差异,子囊孢子的飞散与温度、湿度、降雨密切相关,温度高、湿度大、降雨量多有利于子囊孢子飞散。用硫磺烟剂或代森铵液剂防治该病,均可收到良好效果;7月中旬为最佳施药期。
In the artificial Korean pine forests in the eastern mountainous area of Liaoning Province, 10 fixed observation points were set up to study the epidemiology of Lophodermium maximum. The disease began to show symptoms in late April each year, deciduous in mid-May, late fall in early May to early June in autumn. After the diseased needle fell to the ground, the ascaps disk appeared soon and began cracking in late June. July Late for the peak. The distribution of ascospores was from late May to early August and the peak was late July. There was no significant difference in the distribution of ascospores in the space of 0.3 to 4.8m from the ground. The ascospores were scattered with temperature, humidity, rainfall Closely related, high temperature, humidity, rainfall is more conducive to ascospore spatter. With sulfur smoke agent or ammonium sulfite solution to prevent the disease, can receive good results; mid-July for the best application period.