【摘要】 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应量提高15.69％,作物吸收的土壤磷增加34.00％;灌耕灰漠土的氮、磷肥利用率分别提高49.47％和17.88％,浙江潮土的氮肥利用率提高75.53％。对于辐照效果,25kGy和35kGy二种剂量处理无明显差异,土壤含水量则有明显影响。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 affected the radiation effect greatly.更多还原