Warning: file_put_contents(/home/www/wwwroot/zidian/69228.com/cache/e1e8888eebab17a6ec7526f2a0203c9e.txt): failed to open stream: No space left on device in /home/www/wwwroot/zidian/69228.com/index.php on line 55 免费无码国产在线观看观,亚洲第一911av
Effects of leaching with simulated acid rain and low molecular weight organic acids on exchangeable bases of red soil were investigated using undistributed soil columns. 採用原狀土柱進(jìn)行模擬淋溶實騐，比較研究了模擬酸雨和幾種低分子量有機(jī)酸對紅壤交換性鹽基的影響。