| The effects of four mushroom bran and vinegar residue treatments (mushroom bran 7 500 kg·hm-2 JKⅠ, mushroom bran 15 000 kg·hm-2 JKⅡ, vinegar residue 7 500 kg·hm-2 CZⅠ and vinegar residue 15 000 kg·hm-2 CZⅡ) on bulk density, pH value, and
electronic conductivity of soil as well as yields and conductivity of wheat in different growth periods was studied through a field experiment. The purpose of this study was to provide the theoretical basis for controlling soil secondary salinization in Qingwangchuan irrigation area, Lanzhou. The results indicated that vinegar residue was superior to mushroom bran of remediation on secondary salinization soil as a whole. Soil bulk density, pH value decreased by 6.45%～10.93% and 0.59%～0.93%, electronic conductivity decreased significantly by 36.84%～44.44% after a season of plowing with applying organic wastes. The effects of organic wastes to the mature period of wheat leaf conductivity was most obvious, compared with the CK, JKⅠ, JKⅡ, CZⅠ, and CZⅡ treatments which were significantly reduced by 14.75%, 16.76%, 10.07%, and 20.14% respectively. CZⅡ treatment had the highest wheat yield, which increased by 11.16%. |