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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。
The 25% water content of the soil is irradiated with 25 kGy gamma rays. Pot experiment showed that the plant height, biomass and photosynthetic intensity of winter wheat, pepper and Chinese wolfberry grown in irrigated gray desert soil of Xinjiang and fluvial soil of Zhejiang were significantly increased. After six types of soils were irradiated, the available amounts of nitrogen, phosphorus and potassium were obviously increased, and the effective amounts of iron, zinc and copper also increased, and the oxidation stability of soil organic mineral complexes decreased obviously. After irradiation treatment, the available N supply of Xinjiang gray soil and Zhejiang tidal soil increased by 59.26% and 82.35% respectively, and the soil nitrogen uptake by crops increased by 4.48% and 24.97% respectively. The available phosphorus supply of gray desert soil Increased by 15.69%, and the soil phosphorus uptake by crop increased by 34.00%. The nitrogen and phosphorus utilization rates of gray desert soil increased by 49.47% and 17.88%, respectively. The nitrogen utilization efficiency of Chao soil increased by 75.53%. For the irradiation effect, there was no significant difference between the two treatments of 25kGy and 35kGy, while the soil moisture had a significant effect.