【作者】 脱云飞； 杨路华； 高惠嫣； 杜新艳； 张宽义； 董艳慧； 张振伟；

【Author】 TUO Yun-fei,YANG Lu-hua, GAO Hui-yan,DU Xin-yan,ZHANG Kuan-yi,DONG Yan-hui,ZHANG Zheng-wei (College of Urban and Rural Construction Agricultural University of Hebei, Baoding, Hebei 071001,China)

【机构】 河北农业大学城乡建设学院；

【摘要】 根据土壤水动力学中水热运移的基本原理,建立了秸秆覆盖条件下夏玉米SPAC系统中根系吸水模型和土壤水热运移模型,并应用有限差分法对模型进行离散,通过迭代法求解模型。应用该模型对河北省黑龙港地区秸秆覆盖条件下夏玉米的水热运移进行模拟。试验结果表明:该模型反映了不同覆盖量条件下夏玉米生育期田间水热运移的变化规律,节水和增产效果明显,并为节水条件下的作物高产提供了理论根据。更多还原

【Abstract】 Based on transportation theories of water and heat on soil moisture dynamics, the new models included the root-system sopping up water model and the soil moisture water and heat transportation model were established in the summer corns’ SPAC system in different full quantity, which were dispersed using finite difference methods solved by iterative methods. By these models, the simulations of water and heat transportation were performed under the full wheat straw mulch at summer corns in Heilonggang region, Hebei province. The results showed that these models had reflected the rule of water and heat transportation based on different full quantity in the summer corns fields during growing and the obvious efficiency of saving water and increasing production, which had supplied theory foundation for crop high-production under condition of the saving water.更多还原