不同砒砂岩与沙复配比下的玉米田间土壤温度变化研究
Study on Soil Temperature Variation of Maize Field under Different Soft Rock and Sand Mixed Ratios

试验采用微区定位方法，研究玉米单作下不同砒砂岩与沙复配比例对土壤温度的影响。结果表明：玉米开花期，砒砂岩与沙复配比例为1:1时土壤温差较低，复配比例为1:5时土壤温差较高，而在灌浆期和成熟期，砒砂岩与沙复配比例为1:1时土壤温差较高，复配比例为1:5时土壤温差较低；砒砂岩添加量越低，玉米各个生育期的土壤温度越高。因此，我们认为在玉米生育后期，砒砂岩与沙复配比达到1:2时土温以及变化幅度适中，有利于作物生长和产量的提高。
The experiment used micro-location method to study the effect of different soft rock and sand mixed ratios on soil temperature under maize monoculture system. The results showed that: dur-ing the anthesis, the soil temperature difference was lower when soft rock and sand mixed ratio was 1:1, and the soil temperature difference value was higher when soft rock and sand mixed ratio was 1:5. While during the pustulation period and the mature period, the soil temperature difference was higher when soft rock and sand mixed ratios was 1:1, and the soil temperature difference value was lower when soft rock and sand mixed ratios was 1:5. The lower the amount of soft rock added, the higher the soil temperature in each period. Therefore, we believe that at the later growth stage of maize, the temperature and the change range of soil are moderate when soft rock and sand mixed ratio was 1:2, which is beneficial to the growth and yield of crops.