论文部分内容阅读
一、基本情况干热风是我省小麦生长后期的灾害性天气之一,每当五月下旬,当干热风袭来时,正值小麦灌浆时期,在高温低湿和较大风力的综合影响下。麦株蒸腾量加剧,细胞失水、呼吸停滞,迫使小麦青枯急熟,千粒重降低,一般可减产1～2成,严重时可达三成以上,干热风在北、中部偏东地区十年可七、八遇,部分地区年年有,只是轻重不同,在发生严重年份,估计全省要减收小麦十亿斤左右。农谚:“麦怕四月风(农历)风来一场空”。说明干热风对小麦产量影响是很大的。我省重干热风区在安阳、新乡、开封、商丘、周口地区,次重区在淮北平原和予西丘陵
First, the basic situation Dry hot air is one of the disastrous weather late wheat growth in our province, whenever the end of May, when the dry hot wind hit, coincided with the wheat filling period, under the combined effects of high temperature and low humidity and greater wind. Wheat transpiration increased, the cells lose water, breathing stagnation, forcing the wheat dry crop rapidly, grain weight decreased, the general reduction of 1 to 2 percent, up to 30% in severe cases, dry and hot wind in the north, the central east of 10 years Seven or eight, in some areas every year, but different severity, in serious years, it is estimated that the province will reduce the wheat billions of pounds or so. Farming Proverb: “Mai fear April wind (Lunar) wind to an empty.” The effect of dry and hot wind on wheat yield is great. Heavy dry hot air province in Anyang, Xinxiang, Kaifeng, Shangqiu, Zhoukou area, secondary heavy areas in the Huaibei Plain and to the West Hills