【摘要】 <正> 用25kGyγ射线辐照含水量25％的土壤。盆栽试验表明,新疆灌耕灰漠土和浙江潮土经辐照后种植的冬小麦、辣椒和枸杞的株高、生物量和光合强度均有显著提高。6种类型土壤经过辐照,氮、磷、钾有效量明显提高,铁、锌、铜有效量也有所增加,土壤有机矿质复合体的氧化稳定性明显下降。经辐照处理,新疆灌耕灰漠土和浙江潮土的有效氮供应量分别提高59.26％和82.35％,作物吸收的土壤氮分别增加4.48％和24.97％;灌耕灰漠土有效磷供更多还原

【Abstract】 Pot experiments showed that with the treatment of 25 kGy gamma radiation on the irrigated gray desert soil in Xinjiang and the moist soil in Zhejiang, 25% moisture,plant height,biomass and photosynthesis intensity of winter wheat, hot pepper and matrimony vine increased significantly. In irradiated soils of six types,the available N,P,K were significantly enhanced, and the available Fe,Zn,Cu increased to some extent, while the oxidation stability of the soil organo-mineral complex decreased dramatically. The amount of available N supplied by the irradiated gray desert soil and the moist soil increased by 59. 26% and 82. 35% respectively. The amount of N derived from the irradiated soils in crops also increased by 4-48% and 24.97% respectively. The amount of available P supplied by irradiated gray desert soil increased by 15. 69%, and the P in crops derived from the irradiated gray desert soil increased by 34. 00%. Utilization rate of N fertilizer were raised by 49. 47% and 75. 53% for irradiated gray desert soil and moist soil respectively, that of P fertilizer was raised by 17.88% for moist soil. The effect of radiation on soil showed little difference between treatments of 25 kGy and 35 kGy. However,soil moisture greatly affected the radiation effect.更多还原