本文關(guān)鍵詞： 環(huán)境材料 保水劑 腐植酸 沸石 土壤水分 控氮釋磷　出處：《農(nóng)業(yè)環(huán)境科學(xué)學(xué)報(bào)》2017年09期 　論文類型：期刊論文

【摘要】：采用土柱淋溶實(shí)驗(yàn)方法,探究了土壤保水劑、腐植酸和沸石對(duì)土壤水分保持、控氮釋磷的效應(yīng),通過(guò)過(guò)程分析探討水肥保持增效的機(jī)制。試驗(yàn)結(jié)果表明:保水劑對(duì)土壤水分保持效果最明顯,沸石對(duì)氮肥保持和磷肥活化效果最好,在一定范圍內(nèi)隨添加量增多效果有增強(qiáng)趨勢(shì)且效果持久;當(dāng)保水劑添加量為2 g·kg~(-1)時(shí),土壤水分淋出量相比CK減少4.4%,腐植酸添加量為1.0 g·kg~(-1),氮素淋出量相比CK減少17.4%,沸石添加量為12 g·kg~(-1)時(shí),磷素淋出量相比CK增加68.0%;沸石添加量為9 g·kg~(-1)時(shí),氮磷肥同步增效最好,相比CK,土壤氮素淋出量減少25.1%,磷素淋出量增多29.2%。研究表明,三種環(huán)境材料施用對(duì)土壤水肥保持具有明顯的增強(qiáng)效果。
[Abstract]:The effects of soil water-retaining agent, humic acid and zeolite on soil moisture retention, nitrogen and phosphorus release were studied by means of soil column leaching experiment. Through process analysis, the mechanism of water and fertilizer retention was discussed. The results showed that water retaining agent had the most obvious effect on soil water conservation, and zeolite had the best effect on nitrogen retention and phosphorus fertilizer activation. In a certain range, the effect increased with the increase of the amount of water absorbent, when the amount of water absorbent was 2 g 路kg ~ (-1), the effect of water retaining agent was 2 g 路kg ~ (-1). Compared with CK, the leaching amount of soil water was decreased by 4.4%, the amount of humic acid was 1.0 g 路kg ~ (-1), the amount of nitrogen leaching was 17.4% lower than CK, the amount of zeolite was 12 g 路kg ~ (-1), the amount of phosphorus leaching increased 68.0% compared with CK, the content of zeolite was 9 g 路kg ~ (-1). Compared with CK, the amount of soil nitrogen leaching was reduced by 25.1%, and the amount of phosphorus leaching increased by 29.2%. The results showed that the application of three kinds of environmental materials had obvious enhancement effect on soil water and fertilizer retention.
【作者單位】： 中國(guó)礦業(yè)大學(xué)(北京)化學(xué)與環(huán)境學(xué)院;北京首創(chuàng)環(huán)境投資有限公司;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(41571303) 三峽后續(xù)工作科研課題項(xiàng)目(2015HXKY2-4) 中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目(2016QH02) 北京市自然科學(xué)基金項(xiàng)目(8152025)~~
【分類號(hào)】：S15

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