| A water\|gas separation method was used to study the effects of aerated irrigation on soil habitat factors of soil respiration, soil moisture, soil temperature, and soil oxygen content. This experiment included 4 treatments of aerated (Y), unaerated (N), full irrigation (100%ETc,W1) (ETc for crop water requirement) and deficit irrigation (60%ETc,W2). The results showed that both aerated irrigation and irrigation amount had effects on soil moisture content when potato was growing in a period of low water consumption. In the tuber swelling stage with the largest water consumption, the effect of aerated irrigation on soil moisture content was small, and the main factor affecting soil moisture content was irrigation water. Under the same level of irrigation, the average soil temperature under treatment W1Y was higher 1.68℃ than the treatment W1N, and treatment W2Y was higher 0.52℃ than that treatment W2N. Under the irrigation condition of W1, there were significant differences between W1Y and W1N in most growth stages (P<0.05). It indicated that aerated irrigation had significant effect on soil temperature under condition of sufficient irrigation amount. The changes of soil oxygen content in potato growth period showed the characteristics of increasing first and then decreasing. The relation of soil oxygen content under the four treatments was W1Y>W2Y>W2N>W1N. At the same irrigation level, the oxygen content of aerated irrigation was significantly higher than the unaerated irrigation. Under the same aeration condition, the oxygen content of W1Y treatment was significantly higher than W2Y treatment. Under the same aeration condition, the oxygen content of treatment W1Y was significantly higher than treatment W2Y. It indicated that a good state of water and gas balance was formed in the soil under the condition of high level and aeration irrigation, which was conducive to the growth of crops. The results provides a theoretical basis for studying environmental effects of aerated irrigation in farmland. |