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三、施肥、轮作、不同开垦利用方式对红壤中微生物的影响施用石灰和各种有机、无机肥料是促使红壤熟化,提高土壤肥力的主要措施。由于石灰和肥料不断施入降低了红壤的酸度,提高了土壤盐基饱和度,土壤中有效磷、有机质和氮素的含量也大大增加,从而改变了微生物生长和发育的环境,影响到各种微生物的消长。江西甘家山红壤试验场1955年10月到1957年10月两年四次作物不同肥料组合试验结果表明(表10):初垦红壤因石灰的应用,土壤pH值提高,能促进细菌的增加,芽孢杆菌和真菌数量相对减少;而施氮、磷、钾无机肥料则可增加细菌和真菌的数量,其中以氮肥对微生物影响较大。在施
Third, fertilization, rotation, different ways of reclamation and utilization of microorganisms in red soil application of lime and a variety of organic and inorganic fertilizers is to promote red soil maturation, improve soil fertility of the main measures. Due to the continuous application of lime and fertilizers, the acidity of red soil is reduced and the base saturation of soil is increased. The content of available phosphorus, organic matter and nitrogen in the soil is also greatly increased, thus changing the environment for the growth and development of microorganisms and affecting various Microbial growth and decline. Jiangxi Ganjiashan red soil test site October 1955 to October 1957 four crops of different combinations of fertilizer test results (Table 10): early reclamation red soil due to the application of lime, soil pH value can promote the increase of bacteria, Bacillus and fungi relatively reduced; and nitrogen, phosphorus and potassium inorganic fertilizers can increase the number of bacteria and fungi, of which nitrogen fertilizer on microbial impact. In Shi