关键词: 靶基因, 靶基因

Abstract: In order to study the change of heat resources in Longdong Area and improve the capacity of agricultural meteorological services, the author analyzed change features of the air temperature data from 1960 to 2013 in Huanxian, Qingcheng and Xifeng, three representative areas in Qingyang. The results showed that in the past 54 years, the annual average temperature of Qingyang nrose in volatility, but had their own characteristics. Farming days increased and crop planting boundary went northward with diversity. The heat resources increased and were most abundant in the central plain area. The end of the last frost date showed a trend shifting to an earlier time, crops suffered from frost damage were reduced. It was suggested that according to the climate change, the industrial structure of agriculture should be adjusted and optimized, both technological input in characteristic agriculture and agriculture facilities and proportion of autumn crops should be increased. At the same time, scientific and effective prevention of natural disasters caused by the increased heat resources should be carried out to realize the sustainable development of agricultural production.