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

基于主成分分析的不同預(yù)處理麥秸改良土壤效果評價
CSTR:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家高技術(shù)研究發(fā)展計劃(863計劃)項目(2011AA100503),、甘肅省隴原青年創(chuàng)新人才扶持計劃項目(2015090),、中央高?；究蒲袠I(yè)務(wù)費專項資金項目和高等學(xué)校學(xué)科創(chuàng)新引智計劃（111計劃）項目(111—2—16)


Effect Evaluation of Different Pretreated Wheat Straw Utilizations on Soil Improvement Based on Principal Component Analysis
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計
    • |
  • 參考文獻
    • |
  • 相似文獻
    • |
  • 引證文獻
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    以7種不同預(yù)處理（T1~T7）麥秸改良土壤為試驗數(shù)據(jù),，選用150min累積入滲量（I150）,、有效含水率（θ）,、土壤累積蒸發(fā)量（Ec）,、土壤團聚體分形維數(shù)(FD),、土壤孔隙分形維數(shù)(Dp),、秸稈分解率(Rd),、全氮含量(wTN) 7個相互獨立的指標，基于主成分分析方法研究不同預(yù)處理秸稈還田后,，對土壤入滲特性,、土壤水分有效性、持水性,、結(jié)構(gòu)穩(wěn)定性,、土壤孔隙、秸稈分解率,、土壤全氮含量7個方面的改良土壤效果進行評價,。將各評價指標的加權(quán)和作為改良土壤效果的綜合主成分指標,。結(jié)果表明，改良效果綜合主成分可以代表86.93%的不同預(yù)處理麥秸改良效果變異信息,，且服從正態(tài)分布,，具有較好的代表性和客觀性，可以用于預(yù)處理麥秸改良土壤效果的評價,。在7個指標中,，第一公因子以全氮含量(wTN)、孔隙分形維數(shù)(Dp),、土壤團聚體分形維數(shù)(FD),、土壤有效含水率(θ)的貢獻率較大（達49.92%）；第二公因子以秸稈分解率(Rd),、累積入滲量(I150)和土壤累積蒸發(fā)量(Ec)的貢獻率較大（達37.01%）,。不同預(yù)處理秸稈改良土壤綜合效果優(yōu)劣依次為T6、T7,、T3,、T5、T4,、T2,、T1。氨化秸稈對土壤的綜合改良效果優(yōu)于未氨化秸稈,，粉碎秸稈對土壤的綜合改良效果優(yōu)于未粉碎秸稈,，氨化秸稈與硫酸鈣改良劑混合還田的土壤改良效果優(yōu)于與硫酸鋁改良劑混合配施措施。

    Abstract:

    In order to find optimal pretreated wheat straw utilization on soil improvement, soil samples were collected from indoor incubation experiment of different wheat straw utilizations, seven separate indicators, including 150min of cumulative infiltration (I150), available soil water content (θ), cumulative evaporation (Ec), soil aggregate fractal dimension (FD), soil pore fractal dimension (Dp), straw decomposition rate (Rd) and total nitrogen (wTN), were chosen to evaluate the effect of different pretreated wheat straw utilizations on soil improvement (e.g., water infiltration capacity, soil moisture availability, waterholding capacity, structural stability, soil porosity, straw decomposition rate and soil total nitrogen content). The principle component analysis method was used to conduct the above mentioned seven indicators, then comprehensive improvement index of soil improvement of wheat straw utilization was established by weighted sum of different evaluation indices. Result showed that comprehensive improvement quality principle component obeyed normal distribution significantly and had good representation and objectivity, which could include 86.93% primordial quality attribute variation information, so it could be used as the overall pretreated wheat straw utilization improvement evaluation index of the seven indicators, wTN,Dp, FD and θ contributed the largest percentage (49.92%) in the first common factor, while Rd, I150 and Ec contributed the most (37.01%) in the second common factor. The treatments order of wheat straw utilization improvement was T6>T7>T3>T5>T4>T2>T1. Comprehensive soil amendment of ammoniated straw was better than that of non-ammoniated straw, comprehensive soil amendment of pulverized straw was better than that of non-pulverized straw, ammoniated straw mixed with calcium sulphate improver was better than that of mixed with aluminum sulfate improver.

    參考文獻
    相似文獻
    引證文獻
引用本文

王增麗,馮浩,余坤.基于主成分分析的不同預(yù)處理麥秸改良土壤效果評價[J].農(nóng)業(yè)機械學(xué)報,2016,47(10):150-155. Wang Zengli, Feng Hao, Yu Kun. Effect Evaluation of Different Pretreated Wheat Straw Utilizations on Soil Improvement Based on Principal Component Analysis[J]. Transactions of the Chinese Society for Agricultural Machinery,2016,47(10):150-155.

復(fù)制
分享
文章指標
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2016-03-18
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2016-10-10
  • 出版日期:
文章二維碼