wilting coefficient of soil 中文意思是什麼

wilting coefficient of soil 解釋
土壤萎蔫系數
  • wilting : 凋萎
  • coefficient : adj. 共同作用的。n. 1. 共同作用；協同因素。2. 【數，物】系數，率；程度。
  • of : OF ＝Old French 古法語。
  • soil : n 1 泥土，土壤；土質。2 土地，國土。3 滋生地，溫床。4 農業生活，務農。n 1 臟東西，污物，污穢，污...
  1. Results showed : ( 1 ) if the proportion of water in the soil is lower than wilting coefficient, and if irrigating water is very little, ( irrigating water is spreading horizontally and vertically ) the relationship between the horizontal width ( x ) and the ? rtical depth ( y ) is remarkable. the equation is y - 0. 02 12x2 + l. 8546x - 17. 88. the related coefficient is r = 0. 9350

    結果表明： （ 1 ）在土壤含水量低於萎蔫系數的乾燥條件下，進行微量穴滴灌，滴灌點土壤濕潤面直徑x與最大垂直面滲透深度y呈顯著相關，數學模型為： y = - 0 . 0212x ~ 2 + 1 . 8546x - 17 . 88 ，相關系數r = 0 . 9350 （ 2 ）在微量補水灌溉情況下，只有灌水量大於4000ml /穴，才能使滴灌水滲透到20cm以下土層，達到作物根系集中層，否則水分很難被作物吸收，造成滴灌水的浪費。
  2. Water content and wilting point fluctuate with the profile. the coefficient of variation of soil water content fluctuates from 3. 04 % to 26. 98 % with depth of profile

    剖面各層土壤水分常數的變異系數都介於3 . 04 % ~ 26 . 98 %之間，且隨剖面裸度呈現一定的變化。
  3. Because of the unreasonable restriction of actual models, soil water content at the end of the stage that its sensitivity parameter is small is always close to the wilting coefficient, this makes planting risk. to deal with the planting risk of inadequate irrigation schedule, this paper develops a new multi - objective model for inadequate irrigation schedule programming, and uses the staged multi - dimensional fuzzy optimization method to get the decision - making

    針對現行非充分灌溉制度優化設計模型中約束的不合理性，致使作物在敏感性指數小的階段末土壤含水率易趨于凋萎系數，生產中存在風險的不足，本文提出了考慮作物種植風險指標情況下，非充分灌溉制度的多目標優化模型；並採用本文提出的多維多目標動態規劃方法進行模型求解。
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