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1、作物各生育期气候条件 农业气象要素中光、热、水等因子的不同组合很大程度上影响着农作物的生长发育，也是导致产量形成多少的重要因素。今年大田作物由播种至成熟期间主要天气特点：春夏降水相对偏少，且时空分布不均，伏旱较明显；温度条件前期较差，中期偏高，后期?
1, the climatic conditions of crops during each growth period The different combinations of factors of light, heat and water in agricultural meteorological factors affect the crop growth and development to a great extent and are also the important factors that lead to the formation of yield. The main weather features of the field crops from sowing to maturity in this year are as follows: the precipitation in spring and summer is relatively less than normal, and the temporal and spatial distribution is uneven; the drought is obvious; the temperature conditions are poor at the early stage,