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- marginal land productivity 边际土地生产率
- Experts say will tentional rotational grazing like this extr is extremely important for marginal land. 专家说,循环放牧对边际土地尤为重要。
- Studies have shown that the white pine and loblolly pine are two 2 kinds of trees that grow well on marginal land. 研究表明,白松和火炬松是适合于边际土地种植的两种林木。
- Studies have shown that the white pine and loblolly pine are two kinds of trees that grow well on marginal land. 已有研究表明,五针松和火炬松是两种能在边缘土地很好地生长的树木。
- But using marginal land for grazing is not as simple as it might sound.There is a risk of overgrazing. 利用边角土地作为草地不象听起来那么简单,也存在过度放牧的风险。
- Studies have shown thatthe white pine and loblolly pine are two kinds of trees that grow well on marginal land. 研究表明,美国五针松和火炬松在边缘土地上长势很好。
- The cropping pattern should be adjusted, so as to give a higher yield and maintain land productivity. 进行合理轮作,不但能获得高产,而且可保持土壤生产力。
- Experts say rotational grazing like this is extremely important for marginal land. 专家指出,像这样循环放牧对边缘土地极其重要。
- Another is that parts of Africa, such as the Sahel, have been affected recently by severe climate change, making marginal land unfarmable. 再则非洲的部分地方近来受剧烈变化气候影响,导致原以贫瘠的土地再也无法耕种,比如萨赫勒。
- The amounts of soil organic carbon and phosphorus have become the factors limiting land productivity in hilly regions o. 土壤有机碳库和磷库水平已成为该区土壤生产力重要的限制性因子。
- As the northwestern provinces, already suffering from overplowing and overgrazing, plowed ever more marginal land, wind erosion intensified. 当西北各省已经尝到过度开垦和放牧的苦果时,他们却开垦更多的边缘地带,土壤侵蚀的情况因而加剧。
- To handle leasing for those of the marginal land and coastland that can be developed for enterprise use such as sightseeing or bathing beach etc. 可供造林、农垦、养殖等事业用者,得办理放租或放领。
- Studies have shown that the white pime pine and pime loblolly pine are two 2 kinds of trees that grow well on the marginal land. 研究表明白松和火柜松是适宜在边际土地上生长的二种树。
- Studies have shown that the white palm pine and loblolly palm pine are two 2 kinds of trees that grow well on marginal land. 研究表明白松和火炬松是两种在边际土地上生长的很好的树。
- On the basis of investigated data of Wangmaogou watershed check dams system, the benefits of flood trapping and sediment blocking, increasing land productivity, eco-environment, society are analyzed. 根据王茂沟流域淤地坝坝系的调查资料,分析了王茂沟流域坝系的蓄洪拦泥、增产、生态、社会效益。
- In India and Africa, farmers are expanding production of jatropha, an inedible shrub that is grown on marginal land and requires relatively little water. 在印度和非洲,农民们正在扩大种植麻疯树,它是一种不可食用的灌木,在贫瘠的土地上也能生长,需要的水也相对较少。
- The characteristics of numeric value disperse and spatial distribution of potential land productivity in China were analyzed through classification statistics and classification mapping. 最后,通过分级统计和分级制图,分析了中国土地生产潜力的数值分布和空间分布特征。
- Most agriculture develops a target, if raise land productivity, form,build safe cultivation right and reapportion land to wait to be thought to get the influence of demography condition. 大多数的农业发展目标,如提高土地生产率、构建安全的耕作权利以及重新分配土地等被认为受到人口统计学条件的影响。
- Coastal farmers are making full use of marginal lands by planting black salsify right after the winter harvest. 现沿海地区农民利用冬季二期稻获后里作期间种植,可促使边际土地的充分利用。
- Algal oil is similar to soybean oil but can be grown on marginal lands unsuitable for food crops. 海藻油类似于大豆油,但海藻可以生长在那些不适合粮食作物生长的地区。