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本文分析了贵州1990年水稻、玉米旱期累计雨量、旱期最长无大雨日,受旱始期及其二次项与相对气候产量(Yw)的关系,得出结论:旱期最长无大雨日二次项对水稻、玉米的Yw有极显著的负效应。旱期累计雨量对水稻的Yw产生正效应,旱期累计雨量二次项对玉米的Yw产生显著的正效应。水稻、玉米在抽穗(抽雄)至乳熟期出现严重干旱,将大幅度减产。在乳熟期受轻旱,秋食反而会略有增产。
This paper analyzes the cumulative rainfall of paddy field and maize in Guizhou in 1990, the longest no rainy day in drought period, the relationship between the onset of drought and its quadratic terms and the relative climate yield (Yw), and concludes that the longest rain-free period The second item of Japan has a significant negative effect on Yw of rice and maize. The accumulated rainfall in dry period had a positive effect on Yw of rice, while the quadratic of accumulated rainfall in dry period had a significant positive effect on Yw of maize. Rice, corn in the heading (tasseling) to milk ripe serious drought, will significantly cut. Drought in milky period, autumn diet but will slightly increase production.