查询词典 sandy soil

In order to study the variations of fertile island during the process of desertification, the authors investigated and analyzed the soil chemical characteristics beneath and around the tamarisk shrub, the tamarisk δ^13C in saline meadow, tamarisk shrubland and sandy desert landscape in northern Taklamakan Desert, northwestern China.

为探索荒漠化过程中肥岛效应的变化规律，选择盐化草甸、灌丛及沙漠3种景观类型，测定了柽柳灌丛下和灌丛间空地土壤有机碳、全氮、水分含量以及柽柳营养枝δ^13C等指标，并用土壤养分的富集系数来表征肥岛效应的强弱。

The results showed that soil microbial numbers and biomass in Leymus chinensis and Stipa grandis grassland were higher than those were in degenerative Artemisia frigida and sandy rare-tree grassland significantly.

典型草原不同生态分布类型的土壤微生物量大小有显著不同，土壤微生物的数量与生物量的分布规律基本一致，且与土壤有机质的分布相关联。

The research results of the seed dormancy showed, the seeds of Valeriana amurensis reached highest germination rate (82%) at the temperature treatment in alteration of 10℃ and 25℃, and soil was fertile sandy.

对黑水缬草种子休眠生理进行研究的结果显示：以沙质壤土为基质，配合(10-25-10)℃的变温条件，黑水缬草的发芽率达到最大，为82.1%；黑水缬草种子浸泡液、粗提液以及乙醚浸提液均对黑水缬草的发芽率有抑制作用。

Sandy loams and clays make up the average garden soil in various mixtures of these elements.

除了盐分高外，澳洲大部份的花园土壤是沙质土和粘土的混合物，土壤中磷的含量很低。

Soft-haired sticky plant with heads of bright pink trumpet-shaped flowers; found in sandy desert soil; after ample rains may carpet miles of desert with pink from the southwestern United States to northern Mexico.

一种有软毛的粘性植物，铃状花淡粉色；生长在荒漠土中；降雨充足时，能覆盖从美国西南到墨西哥北部的大片沙漠。

It is observed also that better results were obtained in sandy than in clay soil.

建议施于蔗田，因其可部分取代氮、磷肥（表8），并且用在砂质土要好于粘质土。

The land is rich alluvial soil, much of which is so sandy that it looks more like dark-colored sand dunes.

这里的土壤是肥沃的淤积土；因为大部分都是沙土，所以整个土地看上去更像是堆满了一个个黑黝黝的沙丘。

The space-time variety Characteristics of soil moisture content are studied on mobile dune in Liaoning Northwest Sandy land.

以辽西北沙地流动沙丘为对象，研究了土壤水分运动的时空变化特征。

By the methods of statistics and geostatistics, this paper approached the relationships between the spatial heterogeneities of Artemisia ordosica and soil moisture on the semi-fixed dune of Mu Us sandy land.

结果表明，在块尺度（80 m×80 m）上，油蒿密度和生物量的空间异质性受制于土壤湿度的空间异质性，尤其油蒿生物量的空间异质性与土壤湿度的空间异质性呈显著正相关关系。

The proportion of the plant species in the soil seed banks in the 4 types of sandy grasslands is dominated by annuals and biennials

4种类型退化沙地土壤种子库的种类组成以 1、2年生草本植物为主，所占比例 79%～ 88%，多年生草本和灌木所占比例很小

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。