查询词典 infertile soil

The soil respiration of paddy ecosystem is puniness ,the average quantity of which is 107mg/(m2.h),CO2 net fixation is 22.75 g/m2 per day.

水稻生态系统土壤呼吸释放碳量很小，平均CO2呼吸排放速率为107 mg/(m2.h)，24小时净固定CO2

It has one generation a year and overwinters as pupa in the surface layer of the soil.

该虫在昭通市1 a发生1代，以蛹在表土内越冬。

And (5) the pupae mature into adults and emerge from the soil.

5蛹羽化成成虫从土中出来。

The slopesbetween the mountains and the water usually resemble the thick colors of farmland - the cornfields endless variations of yellow and green, plus the colors of the "purple medic" andfreshly digged red soil!

半坡上，山与水之间，往往是颜色更浓厚沉重的田地——麦田就有从黄到绿的无穷变化，何况还要加上紫色的苜蓿和刚挖开的新鲜红土！

By using kinetic method,surface charge properties of neutral purplish soil and latosol were studied in this paper.

现在，对于测定任何土壤表面电位、表面电荷密度的方法，使方便地获得土壤表面电化学参数成为可能[3]。

This member of the purslane family can grow in poor soil and hot sun, as long as it receives an occasional drink of water.

这成员马齿苋的家庭可以生长在贫瘠土壤和炎热的太阳，只要它接受偶尔喝的水。

Many fungi and bacteria are saprobes, and are important decomposers in food chains, returning nutrients to the soil by putrefaction and decay.

许多真菌和细菌属于此类生物，它们在食物链中扮演重要的分解者角色，可以使营养物质通过腐败作用返回土壤。

It puts forward to differentiate the coarse and fine sand and then measure the sediment yield of total precipitation erosion by using the combined method of drying and pycnometer in the light of the soil mixed with large quantity of coarser sand in the model tests.

针对模型土壤中夹杂着大量粒径较粗的泥沙颗粒的试验，提出进行泥沙粗细分层，然后采用烘干法和密度瓶法相结合的方法来测量次降雨侵蚀产沙量。

Pyracantha seeds were collected from five habitats in the Karst region of northwestern Hunan Province, and the oil content and its components were determined, with their relations to soil nutrients studied.

对湘西北岩溶山区5个生境火棘属植物的籽含油率与油脂组分进行了测定，探讨了土壤养分与火棘籽含油率及籽油主要组分的关联性。

By the method of artificial soil pollution, an exposure experiment with different concentrations of pyrene 0, 60, 120, 240, 480, 960 μg?

通过人工污染土壤的方法，设计花的暴露浓度为0、60、120、240、480、960μg？

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。