【摘要】：為研究免耕條件下輪胎壓實對土壤物理特性及作物根系的影響,于2013—2016年在河北涿州免耕試驗田設置免耕(NT)、免耕深松(STNT)、免耕壓實(CNT)和免耕壓實深松(CSNT)4種處理,分析4種處理對土壤水穩(wěn)團聚體、土壤容重、土壤緊實度、作物根系生長的影響。試驗結(jié)果表明,在3年的試驗周期內(nèi),CNT處理對大團聚體含量的影響具有累積效應,隨著耕作時間的增加,CNT處理各土層土壤大團聚體含量逐漸減小,在深度上CNT處理對大團聚體含量的影響深度逐漸增加,且CNT處理能夠顯著減小土壤團聚體平均質(zhì)量直徑(MWD);10~40 cm土層,CNT處理土壤容重明顯高于NT、STNT、CSNT處理;0~30 cm土壤緊實度由大到小表現(xiàn)為:CNT、NT、CSNT、STNT,CNT處理平均土壤緊實度分別比NT、CSNT、STNT處理大38.2%、58.9%、59.4%;0~20 cm土層CNT處理玉米平均根系質(zhì)量百分比分別比NT、STNT、CSNT處理大24.0%、24.9%、19.3%(P0.05),CNT處理20~40 cm土層平均根系質(zhì)量百分比僅有11.6%;CNT、NT、STNT、CSNT處理小麥平均最大根長密度分別為0.63、0.83、0.84、0.83 cm/cm3。免耕條件下輪胎壓實對土壤物理特性及作物根系生長影響顯著,深松技術(shù)能夠顯著緩解壓實,未受輪胎壓實的免耕區(qū)域雖然能夠增加土壤容重、緊實度,但影響不顯著,短期內(nèi)不需采取疏松措施。
[Abstract]:In order to study the effect of tire compaction on soil physical characteristics and crop root system under no-tillage condition, four treatments were set up in Hebei Zhuozhou No-tillage experiment Field from 2013-2016 to include no-tillage (NT), deep no-tillage, (STNT), no-tillage compaction, (CNT), and no-tillage compaction, (CSNT). The effects of four treatments on soil water stable aggregates, soil bulk density, soil compactness and crop root growth were analyzed. The results showed that the effect of CNT treatment on the content of large aggregates was cumulative in three years, and decreased with the increase of tillage time. In depth, the effect of CNT treatment on the content of large aggregates increased gradually, The soil bulk density of CNT treatment was significantly higher than that of NT,STNT,CSNT treatment (0 ~ 30 cm), showing that the average soil compactness of CNT treatment was higher than that of NT,CSNT,STNT treatment respectively, and the average soil mass diameter of CNT treatment was significantly lower than that of NT,STNT,CSNT treatment (10 ~ (10) ~ (40) cm). The average soil compactness of CNT treatment was higher than that of NT,CSNT,STNT treatment, respectively. The average root mass percentage of corn treated with CNT was 19.3% higher than that of NT,STNT,CSNT treatment (P0.05). The average root mass percentage of 2040 cm treated with CNT was only 11.6CNT NTT and 0.83 cm/cm3., respectively. The effect of tire compaction on soil physical characteristics and crop root growth was significant under no-tillage condition. Deep loosening technology could significantly alleviate compaction. Although no-tillage area without tire compaction could increase soil bulk density and compaction degree, the effect was not significant. There is no need for loose measures in the short term.
【作者單位】： 中國農(nóng)業(yè)大學工學院;
【基金】：國家重點研發(fā)計劃項目(2016YFD0700301) 江蘇省現(xiàn)代農(nóng)業(yè)裝備與技術(shù)協(xié)同創(chuàng)新中心項目(NZXT02201601)
【分類號】：S152;S311

【相似文獻】

相關(guān)期刊論文 前10條

1 晉凡生,張寶林;免耕覆蓋玉米秸稈對旱塬地土壤環(huán)境的影響[J];生態(tài)農(nóng)業(yè)研究;2000年03期

2 柳新偉;劉君;;免耕對玉米秸稈分解率的影響[J];中國農(nóng)學通報;2013年33期

3 籍增順,張樹梅,薛宗讓,閻玄梅,樊蘭瑛,張志琴,洛希圖,武金芳,張象俊;旱地玉米免耕系統(tǒng)土壤養(yǎng)分研究[J];華北農(nóng)學報;1998年03期

4 駱文光;免耕壟作覆蓋技術(shù)的水土保持及經(jīng)濟效益分析[J];水土保持通報;1994年03期

5 張志國,徐琪,R.L.Blevins;長期秸稈覆蓋免耕對土壤某些理化性質(zhì)及玉米產(chǎn)量的影響[J];土壤學報;1998年03期

6 張文軍;保護生態(tài)環(huán)境 實現(xiàn)可持續(xù)發(fā)展 實施機械化保護性耕作技術(shù)[J];農(nóng)機質(zhì)量與監(jiān)督;2001年06期

7 余海英;彭文英;馬秀;張科利;;免耕對北方旱作玉米土壤水分及物理性質(zhì)的影響[J];應用生態(tài)學報;2011年01期

8 張樹梅,籍增順;旱地玉米免耕覆蓋系統(tǒng)對土壤氮、磷、鉀的影響[J];科技情報開發(fā)與經(jīng)濟;2000年04期

9 戴曉琴;李運生;歐陽竹;;免耕系統(tǒng)土壤氮素有效性及其管理[J];土壤通報;2009年03期

10 李卿沛;黃高寶;王曉娟;劉博;;旱地馬鈴薯免耕覆蓋擺種的產(chǎn)量表現(xiàn)及其對土壤水分和養(yǎng)分的影響[J];甘肅農(nóng)業(yè)大學學報;2010年01期

相關(guān)重要報紙文章 前1條

1 實習生 劉慶　本報記者 魏星奎;涪城推廣免耕秸稈覆蓋技術(shù)[N];綿陽日報;2010年

相關(guān)博士學位論文 前1條

1 張寶林;晉西旱塬地區(qū)覆蓋耕作農(nóng)田水分有效性及其利用研究[D];中國農(nóng)業(yè)大學;2005年

，

本文編號：2207649