【摘要】 <正> 前言 旱农的限制因子是水。水的主要来源靠天雨。天雨通过土壤供给植物。从降水到转成植物产品包括三个环节:①使降水尽可能多地进入土壤;②尽量防止土壤水分的蒸发与渗漏;⑨使土壤贮水充分有效地被植物吸收并用于生产。只有全面抓住了这三个环节,才更多还原

【Abstract】 Based on the actual examples in drought years, the paper analyses the key link to the crop drought resistance and stable yielding and also confirms drought-resistant mechanism by furrow planting from stating soil moisture contents of ridge and furrow planting patterns, As a result, the knowledge of drought-resistant cultivation has been further raised and some basic measures have also been advanced in the paper.The outlines for drought resistant cultivation are: (1) the middle section (10—30cm) of movable soil layer (0—50cm) of the root system should be enriched as the basic productive layer, which is the basic soil for droughtresistance and high yields, (2)the root system should be promoted to be formed in time and made to distribute in the basic productive layer, which is the key to drought resistance and high yielding, and (3) practising furrow planting is a guarantee for drought resistance and high yielding,The basic measures taken are deep ploughing,deep applying fertilizers,furrow planting and earthing carried out by ridging and filling furrows in different times.更多还原