层次分析结果表明:护坡草种筛选中较重要的前五个指标分别为抗旱性、盖度、地上植物量、耐贫瘠性和地下植物量。
Hierarchy analysis shows that the most important indices are resistant to draught, coverage, the aboveground biomass, tolerance to barren soil, biomass of roots among the 20 indices.
尼日尔的农夫拥有树木所有权,于是FMNR在这里得到普及性推广,尼日尔被大量绿树覆盖;而尼日利亚的土地则光秃贫瘠。
On the Niger side, where farmers were allowed to own trees and FMNR was commonplace, there was abundant tree cover; but in Nigeria, the land was barren.
贫瘠的土壤、崎岖的地表以及恶劣的气候造成典型的生存性农业,仅能种植维持农场家庭生存所必需的作物。
Poor soils, uneven terrain, and a severe climate led to typical "subsistence" farming, the growth of only those crops necessary for family maintenance.
对于一些永久性的转变来说,这就是一个噩梦,例如从全新世到今天各种事物的变化:例如一个更热的世界,伴随着的就是贫瘠的海洋。
The nightmare would be a flip to some permanently altered state much further from the Holocene than things are today: a hotter world with much less productive oceans, for example.
这类地方种质的绝对产量不高,但其稳产性和在干旱贫瘠条件下的丰产性优于杂交种。
Although this kinds of drought-resistance germplasm have a low absolute yield, their fertility and stability of yield under drought and infertile condition preceded crossbreed.
贫瘠的土壤、崎岖的地表以及恶劣的气候造成典型的生存性农业,仅能种植维持农场家庭生存所必需的作物。
Poor soils, uneven terrain, and a severe climate led to typical "subsistence? Farming, the growth of only those crops necessary for family maintenance."
赫斯特通过这件作品,也在暗示生活不能在一个贫瘠和人造的环境里,被简化的只具有功能性。
Hirst also implies that life cannot be reduced to mere functionality, within a sterile and artificial environment.
具有生产力高、耐干旱、耐贫瘠、耐盐碱、营养丰富和适口性好等生物生态学特性,经济价值较高。
It has lots of specialities in Ecophysiology such as high productivity, tolerance of dry, leanness-resistant and saline-alkali tolerance, abundance of nutrition, great worth of economy and feels well.
具有生产力高、耐干旱、耐贫瘠、耐盐碱、营养丰富和适口性好等生物生态学特性,经济价值较高。
It has lots of specialities in Ecophysiology such as high productivity, tolerance of dry, leanness-resistant and saline-alkali tolerance, abundance of nutrition, great worth of economy and feels well.
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