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Changes in cropping patterns in the Canadian Prairies are examined from the early1960s to the mid-1990s using census data. Patterns of change within the region aremapped by census division using averaged proportions of land in crops occupied by themain crops for three pairs of census years. Spring wheat and oat have undergone themost significant relative declines. Canola increased dramatically from being the sixthrankedcrop by area in the early 1960s to the third-ranked crop by area by the 1990s.The main change in the Brown soil zone has been a large decline in spring wheat anda compensatory gain in durum wheat. Increases in special crops, especially pulse crops,canola and durum wheat have offset a substantial decline in spring wheat in the DarkBrown soil zone. Barley, tame hay and especially canola have increased at the expenseof spring wheat, oat and flaxseed in the Black and Gray soil zones. Prices, transportationcosts, changing export markets, crop breeding and local processing all have contributedto these changes.

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謝謝英文一級棒的大大!!!

不要是google的噢!!!

2 個解答

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  • 8 年前
    最佳解答

    Changes in cropping patterns in theCanadian Prairies are examined from the early 1960s to the mid-1990s usingcensus data. Patterns of change within the region are mapped by census divisionusing averaged proportions of land in crops occupied by the main crops forthree pairs of census years. Spring wheat and oat have undergone the mostsignificant relative declines. Canola increased dramatically from being thesixth-ranked crop by area in the early 1960s to the third-ranked crop by areaby the 1990s. The main change in the Brown soil zone has been a large declinein spring wheat and a compensatory gain in durum wheat. Increases in specialcrops, especially pulse crops, canola and durum wheat have offset a substantialdecline in spring wheat in the Dark Brown soil zone. Barley, tame hay andespecially canola have increased at the expense of spring wheat, oat andflaxseed in the Black and Gray soil zones. Prices, transportation costs,changing export markets, crop breeding and local processing all havecontributed to these changes.利用統計數據,來檢驗從六零年代早期到九零年代中期,加拿大草原三省種植模式的改變。統計部門先將該期間分成三個普查時段,接著用每個時段中所種植主要作物的農業用地平均比例,來繪制加拿大草原三省的改變模式。相較之下,春麥和燕麥的產量所減少的程度最明顯。以面積來看,油菜從在六零年代早期時排名第六的作物,劇升到在九零年代排名第三的作物。在棕壤帶的主要變化是春麥的大量減產,和杜蘭麥互補性地增產。特殊作物的增產,抵銷了春麥在暗棕壤帶中的大量減產,尤其是豆類作物、油菜和杜蘭麥這三種特殊作物。以春麥、燕麥和亞麻子的產量為代價,大麥、牧草以及特別是油菜,在黑土和灰土帶中增加了產量。價格、運輸成本、外銷市場轉變、作物培育以及當地加工,這些都是造成改變的因素。

    參考資料: 布丁,妳的名字真誘人,我們一起出去吃個飯吧。喜歡吃火鍋嗎?
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  • 阿昌
    Lv 7
    8 年前

    在加拿大大草原的種植模式的變化研究從20世紀90年代中期利用普查數據 early1960s。區域內的變化規律 aremapped普查使用土地的平均比例的劃分,在佔領了三個普查年對 themain作物的作物。春小麥和燕麥都發生了顯著 themost相對下降。油菜籽大幅增加,從20世紀 60年代初由區 sixthrankedcrop排名第三的作物1990s.The棕壤區的主要變化按面積已大幅下降硬粒小麥在春小麥安達代償增益。特殊作物,特別是豆類作物,油菜和硬粒小麥的上漲抵消了在DarkBrown土壤區春小麥大幅下降。大麥,馴服乾草,特別是油菜籽增加expenseof春天小麥,燕麥,亞麻籽中的黑色和灰色的土壤區。價格,transportationcosts,出口市場的變化,作物育種和當地加工都contributedto這些變化。

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