【摘要】 针对春旱是影响黄土高原农业生产的主要气象灾害的实际，通过多处理田间试验，研究了主要作物冬麦、玉米防春旱措施。经统计检验，得到在严重干旱年份，防春旱效果好的有效措施，明显提高了降水利用效率。更多还原

【Abstract】 According to the fact that spring drought is the main meteorological disaster affecting agricultural production in Loess Plateau, with multitreated field experiments, the precautions against spring drought of winter wheat and corn were studied. Through statistical tests, the effective precautions against spring drought in seriously arid years were obtained, which can raise the utilization ratio of precipitation obviously.更多还原