亚铵法制浆中段水灌溉对土壤及冬小麦生长的影响

Effects of Mid-stage Effluent of Ammonium Sulfite Method Irrigation on Soil and Growth of Winter Wheat

亚铵法制浆中段水含有大量的营养物质，且基本不舍有毒有害物质从而区别于其它工业污水．如直接排放不仅污染环境而且造成资源的浪费。通过冬小麦田间试验将中段水作为灌溉用水，解决中段水环境污染问题及资源浪费问题。结果表明，亚铵法制浆中段水灌溉能明显增加小麦株高及根重，并使小麦增产达到5.56％～18.51％．且同时提高了土壤中有机质和全氮的含量，说明亚铵法制浆中段水灌溉是可行的；但是亚铵法制浆中段水在提供养分的同时，也增加了土壤中盐分的含量，为了防治盐分积累，中段水灌溉水量及灌溉方式需进一步探讨。

Mid-stage effluent of ammonium sulfite method is different from other industrial waste-water because of its abundant nutrients and less toxicity. The direct drainage would lead to both pollution of envi- ronment and waste of resources. Field experiments were conducted to study the effects of irrigating the winter wheat with mid-stage effluents of ammonium sulfite method on the alleviation of the water pollution and reduction of resource loss. The results showed that the height of wheat and root weight increased markedly, and yields improved from 5.56% to 18.51% after the application of mid-stage effluents. How- ever, the content of total soil salinity was elevated as mid-stage effluents helped to increase the content of organic matters and total nitrogen in tested soil. Therefore, further researches should be conducted to study the most effective amount and modes of irrigation to inhibit the extra accumulation of total salinity in soil.