ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

岷江干旱河谷區(qū)不同土地利用方式下土壤抗沖性試驗(yàn)
CSTR:
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類(lèi)號(hào):

基金項(xiàng)目:

國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973計(jì)劃)資助項(xiàng)目(2007CB106803);中國(guó)科學(xué)院知識(shí)創(chuàng)新工程資助項(xiàng)目 (KZCX2—YW—441)


Anti-scourability of Soil under Different Land Use Types in Dry Valley of Minjiang River
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問(wèn)統(tǒng)計(jì)
  • |
  • 參考文獻(xiàn)
  • |
  • 相似文獻(xiàn)
  • |
  • 引證文獻(xiàn)
  • |
  • 資源附件
  • |
  • 文章評(píng)論
    摘要:

    采用野外實(shí)地放水沖刷的試驗(yàn)方法,對(duì)岷江上游干旱河谷區(qū)龍壩溝流域不同土地利用方式(灌木林地,、荒草地,、耕地和裸地)下土壤抗沖性進(jìn)行測(cè)試研究,,分析了土壤侵蝕產(chǎn)沙相關(guān)因素,。結(jié)果表明:不同土地利用方式下土壤抗沖系數(shù)均隨沖刷時(shí)間延長(zhǎng)呈波狀上升變化趨勢(shì),;土壤的抗沖性從大到小依次為:荒草地,、小麥耕地,、灌木林地、玉米耕地,、裸地,;土壤抗沖系數(shù)與粉粒體積分?jǐn)?shù)呈顯著負(fù)相關(guān)(相關(guān)系數(shù)為-0.992,P<0.01),,與砂粒體積分?jǐn)?shù)呈顯著正相關(guān)(相關(guān)系數(shù)為0.925,,P<0.01)。

    Abstract:

    In order to provide scientific and theoretical basis for control of water and soil loss of slope, soil anti-scourability for different land uses (shrub land, waste grassland, cultivated land and bare land) in Longbagou basin, the dry valley of upper Minjiang River was studied by the flume experiment, and soil erosion and sediment yield characteristic and its influencing factors were discussed. The results showed that the anti-scourability of surface soil under different land use patterns increased and assumed wavy variation along with scouring time; the anti-scourability followed the order of waste grassland, wheat land, shrub land, corn land, bare land; soil anti-scourability values and silt content has a significant negative correlation (r=-0.992, P<0.01), and sand content has a significant positive correlation (r=0.925, P<0.01).

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

伏耀龍,張興昌.岷江干旱河谷區(qū)不同土地利用方式下土壤抗沖性試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2012,43(7):50-55. Fu Yaolong, Zhang Xingchang. Anti-scourability of Soil under Different Land Use Types in Dry Valley of Minjiang River[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(7):50-55.

復(fù)制
分享
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2012-07-02
  • 出版日期:
文章二維碼