开花期、结荚期和鼓粒期干旱对产量影响最大，在大豆生产中要特别注意这几个生育时期的水分管理。
Effect of drought treatments at florescence, pod-setting and grain-filling on yield was significant and we should pay attention to moisture-managing at this growth stages in producing of soybean.
稻草覆盖可减轻玉米旱害，其效果随着覆盖量的加大而越明显，但受干旱程度和生育期影响。
The thicker the straw mulching, the more significant the effect. But the effect was limited by soil aridness and growth stage of maize.
降水量的减少，气温的上升，冬小麦生育期蒸发量大等因素，是造成廊坊市冬小麦干旱的主要气候因素。
Precipitation reduction, temperature rise, and large evaporation in growth period are main climate reasons why winter wheat drought of Langfang city occur.
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