论文部分内容阅读
根据30a气象资料、石榴树发生冻害年份和病害观察,从中找出冻害发生规律、症状及冻害原因。结果表明:石榴冻害是在初春和秋末短时间内天气突变,24h降温幅度较大,且最低气温降到0℃以下,骤热骤冷的不良环境条件下使石榴树受害;根据气象预报,对石榴树采取以培土、涂白、熏烟等相应的防冻技术措施,防治效果显著。
According to 30a meteorological data, frozen pomegranate trees and diseases observed in the year, from which to identify the occurrence of the law of freezing, symptoms and causes of frost damage. The results showed that the pomegranate frost damage was caused by the sudden change of weather in early spring and late autumn, the large temperature decrease in 24h, and the lowest temperature below 0 ℃, which caused the pomegranate tree to suffer under the adverse environmental conditions of rapid cooling and quenching. According to the weather forecast, Pomegranate tree to take soil, Tu white, fumigation and other appropriate antifreeze technical measures, prevention and treatment of significant effect.