您要查找的是不是:
- The settlers irrigated the arid land. 移民們灌溉乾燥的土地。
- The relationship of competitive ability and productive performance between land race Monkhead and modern variety 8275 of spring wheat in semi arid area of Loess Plateau was invested using de Wit replacement series. 采用deWit替代系列法研究了黃土高原半干旱雨養農業(yè)區傳統地方品種(和尚頭)與現代品種(隴春8275)之間在混播條件下的競爭結局。
- The farmers have turned the arid land into irrigated fields. 農民已經(jīng)把那旱地變成了水澆田。
- What they are doing is transformation of arid land into irrigated fields. 他們正在做的工作就是變旱地為灌溉地。
- Aeolian sand, distributed extensively around China?s arid and semi arid zones, is the main bearing body of wind erosion in China. 風(fēng)成沙廣泛分布于我國干旱與半干旱地區,是我國風(fēng)蝕與風(fēng)沙活動(dòng)的主要載體。
- Water application furrow seeder for arid and semi arid region can carry on the watering operation as sowing and fertilizing with the objective of seedling prevention. 施水溝播機可在起壟施肥播種的同時(shí)進(jìn)行施水作業(yè),從而解決了干旱和半干旱地區的播種保苗問(wèn)題。
- Farmers suBdued the arid lands of australia. 農夫們開(kāi)墾澳洲的乾燥土地。
- The situation of water resources deficiency is very scrious in the large areas o f the arid, semi arid even semihumid of Huabel Plain, endangering the agricultur al sustainable development. 華北平原廣大的干旱、半干旱甚至半濕潤區,水資源形勢嚴峻,威脅農業(yè)持續發(fā)展。
- Semi arid climate, poor vegetation cover and highly erodible loess can be regarded as the main natural factors responsible for the formation of hyperconcentrated flows in the Loess Plateau, China. 黃土高原半干旱的氣候條件、稀疏的植被和疏松易蝕的黃土物質(zhì),是該地區高含沙水流形成的自然地理因素。
- Ardeidae bird is one of important species belonging to wet land ecosystem, and regarded as indicator for environmental assessment. 鷺科鳥(niǎo)類(lèi)是濕地生態(tài)系統中重要的生物種類(lèi)之一,也是環(huán)境質(zhì)量評價(jià)的一類(lèi)指示動(dòng)物。
- Arid and extremely arid land are deserts, and semiarid grasslands generally are referred to as steppes. 干旱和極度干旱的土地是沙漠,半干旱草原和通常被稱(chēng)為草原。
- They note that the rocky, arid land in winegrowing regions provides farmers with few alternatives to wine production. 他們指出,產(chǎn)酒區土地崎嶇不平、貧瘠乾燥,農民幾乎別無(wú)選擇
- The problem of water shortage on Huang-Huai-Hai(HHH) Plain is becoming serious day by day,at the same time it has become a main factor of restricting land ecosystem. 水資源短缺也是廣大平原地區土地生態(tài)服務(wù)功能減弱的主要因素,成為全面建設小康社會(huì )所要求的生態(tài)環(huán)境質(zhì)量的主要制約因素。
- The arid land in Western China refers to the vast areas in the west of Helan Mountain and the north of Kunlun Mountain. 從中國西部干旱區的界定、自然條件特點(diǎn)的分析出發(fā),結合國家西部大開(kāi)發(fā)戰略的實(shí)施,指出進(jìn)行該區生態(tài)環(huán)境演變與調控研究的重大意義。
- Semi arid region of Chinese Loess Plateau 黃土高原半干旱地區
- Huang Peiyou , Lu Zili, Wang Yuhui, 1996. Establishment of the Mosouwan Oasis and the variation of Holoxylon deserts. Chinese Journal of Arid Land Research 9(1): 61~ 67. 周廣勝,王玉輝,張新時(shí),1998.;中國植被/生態(tài)系統對全球變化反應的模式研究與展望
- The concept of land ecological safety is the land ecosystem of mankind ensure degree unaffected by ecological destroy and environment pollution in the production, living and health. 土地生態(tài)安全是指土地生態(tài)系統對人類(lèi)在生產(chǎn)、生活和健康等方面不受生態(tài)破壞與環(huán)境污染等影響的保障程度。
- Artificial oases are arid lands transformed by long-term human activities. 人工綠洲是在干旱條件下經(jīng)長(cháng)期人類(lèi)活動(dòng)改造而形成的特殊景觀(guān)。
- Land-lake ecozone refers to the functional zone between internal water ecosystem and the land ecosystem, where them is an apparent complexity which attracts attention from geography and geobotany. 摘要水陸生態(tài)交錯帶是指內陸水生生態(tài)系統與陸地生態(tài)系統之間的功能界面區,其復雜性是地理學(xué)和地植物學(xué)關(guān)注的重要問(wèn)題。
- Evaporation in arid lands enriches mineral accumulation in their lakes. 干旱土地上的蒸發(fā)作用在它們的湖里富集了礦物。