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中国农学通报 ›› 2004, Vol. 20 ›› Issue (5): 256-256.

所属专题: 玉米 农业气象 烟草种植与生产

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从降水量看干旱对南郑春玉米生产的影响

袁应泽   

  • 出版日期:2004-10-05 发布日期:2004-10-05

Effects of Drought on Spring Maize Production In Nanzheng and Its Strategies for Proposing Based on Recent Decade Precipitation

Yuan Yingze   

  • Online:2004-10-05 Published:2004-10-05

摘要: 针对近10年干旱对南郑春玉米生产的威胁,分析了历年和近10年春玉米生育期内降水分布规律,提出了在保证出苗温度的前提下将春玉米播种期提早一旬,能更好地适应近年降水分布规律,减轻干旱危害。并通过土壤水分测定提出了低温早播、免耕、二元覆盖对减少土壤水分蒸发,增加土壤对降水的积蓄,提高降水利用率的作用。

Abstract: Aiming at recent decade drought stress on Spring maize production in Nanzheng, a comparison of the precipitation distribution between 1966-2000 and recent decade are made, and it is put forward that ensure of seeding temperature the start seeding date is ten days ahead can adapt precipitation distribution better and the harm of drought is reduced. The effect of early seeding in low temperature and cultivate free and double covering on reducing soil water evaporation and enlarging soil capacity of absorbing precipitation and increasing the efficiency of precipitation usage are put forward through field soil water measurement.