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今年滁县地区午季大丰收,无论是总产还是单产都是历史最高水平,特别是定远、凤阳、嘉山三县,增产幅度之大,是多年来所罕见的.导致今年小麦增产的原因很多,其中良好的气象条件是一个很重要的因素. 在现有生产水平下,气象条件对农作物的产量影响极大,有时甚至左右生产形势的好坏.去年大旱,获致今年小麦特大丰收,从气象条件来分析.有以下一些特点: 一、秋种前后的天气和土壤条件1978年我区遭受百年不遇的大旱,全年降水量566.9毫米,比正常年景的950.5毫米(60—78年降水量的平均值) 少41%.6、7、8三个月降水量246.5毫米,比正常年份的464.3毫米少47%;而同期蒸发量达839.2毫米,比历年的700.1毫米多139.1毫米,水分的大量蒸发加剧了旱情的发展.特别是8月份降水量仅13.6毫
This year Chu District harvest in the afternoon, whether it is the total output or yield is the highest level in history, especially Dingyuan, Fengyang, Jiashan three counties, a large increase in yield, is rare for many years. There are many reasons, of which the good weather conditions are a very important factor. Under the current production level, the weather conditions have a great impact on the crop yield, and sometimes even the production situation is good or bad last year’s drought, which led to this year’s bumper harvest of wheat , From the weather conditions to analyze the following characteristics: First, before and after autumn weather and soil conditions in 1978 suffered a serious drought in our region, the annual rainfall of 566.9 mm, 950.5 mm than the normal year (60-78 The average annual precipitation is 41% less.) 6,7,8 The three-month precipitation is 246.5 millimeters, 47% less than the 464.3 millimeters for the normal years, while the evaporation over the same period is 839.2 millimeters, 139.1 millimeters more than the 700.1 millimeters over the previous year , A large number of evaporation of water exacerbated the development of the drought.Especially in August the precipitation was only 13.6 milliliters