| 摘要: |
| 本文讨论固体亚硫酸铵肥料在水稻土施用的肥效、转化和对土壤氧化还原状况的影响。试验结果表明,只要施用量恰当,亚铵与硫铵有同等肥效。亚铵可以利用工业废气中的 SO_2生产,良化生态环境,变废为宝,开发利用很有意义。亚铵在渍水土壤施用,引入的 SO_3~(2-),多数在水层被氧化成 SO_4~(2-),对土壤还原性质影响不大;土层的pe+pH多数在5以上,不足以造成 SO_3~(2-)被还原成 H_2S~0或 S~(2-)而构成对水稻毒害。土壤水溶性亚铁离子约占亚铁离子总量的5%(约28ppm),低于对水稻毒害的临界浓度。亚铰肥料在水稻土合理施用是安全的,肥效良好。 |
| 关键词: 固体亚硫酸铵 水稻土 肥效 SO_3~(2-) H_2S 氧化还原 |
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| Abstract: |
| The paper deals with the effect,transformation and influence of redox pro- perties on soil by solid ammonium sulphite fertilizr [(NH_4)_2SO_2.H_2O] to be applied to the rice soil. Result of the test has been made out,the ammonium sulphite and the ammo- nium sulphate fertilizers had equal fertilizer effect under suitable quantity of application. The ammonium sulphite can be made from so_2 of the industrial waste gas. It can improve ecological habitat.And so it is of great significance. If the ammonium sulphi... |
| Key words: solid ammnium sulphite rice soil effect of fertilizer SO_3~2- H_2S redox |
