论文部分内容阅读
2 0 0 1年 3月 2 8日 ,山东经受了一场强冷空气袭击。由于寒流到来之前已有约 1 0天的反常升温 ,杏、樱桃、李、梨、石榴、核桃、猕猴桃等多种果树的花器和嫩梢严重受冻 ,经济损失惨重。此次寒流的特点是强度大 ,气温先暖骤寒 ,受害范围广。从这次寒流侵袭得到的启示是 :像山东西部、北部及至鲁中地区 ,春季周期性遭受寒流侵袭是绝对的 ,生产中应有所防范 ;选择品种时需综合考虑抗寒力 ;寒流之所以造成危害除低温外还有其他关联因素的交互影响。常规的熏烟防寒和采用保护栽培措施可有效地防止冻害 ,或把冻害压到最低限度
On March 28, 2001, Shandong suffered a strong cold air attack. Since about 10 days of anomalous warming occurred before the onset of the cold wave, the flowers and shoots of many fruit trees such as apricot, cherry, plum, pear, pomegranate, walnut, and kiwi fruit were seriously frozen and the economy suffered heavy losses. The characteristics of the cold is strength, temperature and warm first cold, victimize a wide range. Inspiration from this cold invasion is: like the western Shandong, northern and central regions of Shandong, the cyclone in the spring is absolutely affected by the cold, the production should be prevented; the choice of species need to take into account the cold; cold reason In addition to causing harm outside of the low temperature there are other interaction factors. Conventional fumigation of cold and protection measures can effectively prevent frost damage, or to minimize the risk of freezing