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本文介绍低剂量γ射线照射提高桑蚕幼虫对不良夏秋季条件的抵抗力.对照组Ⅰ将蚕卵在春季(4月)进行实验,实验组蚕卵在2～4℃下保存至6月份,然后在23±1℃恒温箱经历胚胎发育期,在该箱中放置活性为2.5×10~8Bq带有铅准直仪的~(137)Cs放射源,在γ射线束的不同距离上放置装有蚕卵的小皿(每点500个卵),距源最近者剂量率为1.44cGy/d,最远者为0.036cGy/d,对照组Ⅱ的蚕卵也放在上述温箱中,但用铅防护置于γ射线束外.在这种条件下经
This article describes the low-dose γ-ray irradiation to improve silkworm larvae on the adverse summer and autumn conditions resistance.In control group Ⅰ silkworm eggs in the spring (April) experiment, the experimental group of silkworm eggs at 2 ~ 4 ℃ until June, The embryos were then subjected to embryonic development at a temperature of 23 ± 1 ° C in which a ~ (137) Cs radioactive source with a lead collimator activity of 2.5 × 10 ~ 8Bq was placed, placed at different distances on the γ-ray beam A small dish with silkworm eggs (500 eggs per point), the dose rate of 1.44 cGy / d from the nearest source and 0.036 cGy / d in the farthest place were also placed in the above incubator Lead protection placed outside the γ-ray beam. Under these conditions