雜草競爭 的英文怎麼說
中文拼音 [zácǎojìngzhēng]
雜草競爭
英文
weed competition- 雜 : Ⅰ形容詞（多種多樣的; 混雜的） miscellaneous; varied; sundry; mixed Ⅱ動詞（混合在一起; 攙雜） mix; blend; mingle
- 草 : Ⅰ名詞1 （草本植物的統稱） grass 2 （指用作燃料、飼料等的稻、麥之類的莖和葉） straw 3 （草稿） dra...
- 競 : 動詞（競爭; 競賽） compete; contest; vie Ⅱ形容詞[書面語] （強勁） strong; powerful
- 爭 : Ⅰ動詞1 （力求得到或達到; 爭奪） contend; vie; compete; struggle for; strive 2 （爭執; 爭論） argu...
- 雜草 : weeds; rank grass; hogweed
- 競爭 : compete; vie; contend
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The results indicated that as the intensity of sward cleavage increased, elymus nutans and other plants that had high requirements in soil aeration and resource space presented an increased competitive edge and the species that had low requirements in soil aeration and resource space presented an opposite picture ; low - intensity sward cleavage could help increase species diversity to a certain extent, but the diversity index appeared to decline as a whole as the cleavage intensity increased ; the effects of sward cleavage on functional groups of the vegetations showed in such manner as e. nutans - represented grasses increased in their composition with the intensity of sward cleavage raised, and sedges and forbs decreased in their compositions with the intensity of sward cleavage raised ; sward cleavage showed a significant improving effect on primary productivity of the meadows and was capable of increasing the proportion of quality - grass biomass to the total plant biomass ; sward cleavage could be independently employed as an effective measure to rehabilitate and improve alpine - meadow grasslands and thus played a basic and key role in the technical combination aiming at establishing hay fields characterized by e. nutans
結果表明：垂穗披堿草等對土壤通透性和資源空間要求較高的物種，競爭力隨劃破強度的增加而上升，而對土壤通透性和資源空間要求相對較低的物種則相反；輕度劃破干擾對提高物種豐富度具有一定的促進作用，但多樣性指數則總體上表現為隨劃破強度的增加而呈下降的趨勢；劃破干擾對植被功能群的影響表現為以垂穗披堿草為代表的禾草類組分隨干擾強度的增加而顯著上升，莎草類和雜類草組分隨干擾強度的增加而顯著下降；劃破干擾對草地初級生產力的提升具有顯著的促進作用，且可顯著增加植物總量中優質牧草的比重；劃破干擾可獨立作為高寒草甸類草地恢復與改良的有效措施，在定向培育垂穗披堿草型割草場的技術組合中具有核心和基礎性的地位。Weeds compete with crops for moisture, nourishment and light, moreover, they are hosts of disease or the place where disease survives in the winter, which influences the output and quality of crops
雜草與農作物競爭水分、養料和光照，影響農作物的產量、品質，還是許多病害的中間寄主或越冬場所，通過除草劑來控制雜草已成為現代化農業不可缺少的一部分。
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