1976年,我们作了在轻碱地施入玉米秸后,土壤微生物变动情况的研究。观察到细菌、放线菌、纤维素分解菌均有显著增加,霉菌也略有增高。同时,还观察到土壤养分也有一定程度的提高,并对玉米有一定的增产效果,但土壤pH无显著变化。 正如所知,施入土壤中的秸杆在分解过程中产生有机酸,而有机酸产生的多寡受很多因素影响。藤井等人的试验表明,在旱田情况下施入稻草(粉末)分解产生的有机酸量不多, In 1976, we made a study on the changes of soil microorganisms after applying corn stalks to light soil. Observed bacteria, actinomycetes, cellulolytic bacteria were significantly increased, but also a slight increase in mold. At the same time, it was also observed that the soil nutrient also increased to a certain extent, and had a certain yield increase effect on corn, but the pH of the soil did not change significantly. As known, straw applied to soil produces organic acids during decomposition, and the amount of organic acids produced is affected by many factors. Fujii et al’s experiments show that in the case of dry land into straw (powder) decomposition of organic acids produced by small amounts,