查询词典 infertile soil

Rational fruit variety distribution and scientific management based on soil fertility is an important prerequisite for high yield, fine quality, high efficiency, low consuming, sustainable agriculture.

根据土壤肥力进行合理的品种布局和科学的田间管理是发展高产、优质、高效、低耗、可持续农业的一个必要前提。

Field trials on the effect of three levels (1.0, 1.5 and 2.0 kg/plant/year in plant cropping, and 0.76, 1.06 and 1.36 kg/plant/year in ratoon cropping) of compound fertilizer Tai-Fei No.4 on the vegetative growth, yield and post-harvest quality attributes of TC1-229, a semi-dwarf, fusarial wilt-resistant banana clone, were conducted on a soil of silt loam with a pH of 8.0 and 2% of organic matter for two consecutive years.

在有机质含量约百分之二的坋质壤土定植中矮性抗黄叶病品系TC1-229组织培养苗蕉株，每年每株施用台肥四号复合肥料1.0，1.5或2.0公斤，抽穗期叶片之矿物营养组成均在正常范围内，惟磷和镁含量随肥料施用量减少，处理间差异达显著水准(P=0.05)。

Use of a facing system to prevent soil raveling between the reinforcing elements allows very steep slopes and vertical walls to be safely constructed.

使用一种面向系统，以防止土壤raveling之间加强的部分，允许非常陡峭的山坡上，并竖墙能安全地建成。

There was a double Boost for Italy's volleyball club s when they won the men's and women's European Volleyball Championships. Ravenna won the men's event in Switzerland on Sunday.and Rome won the women's title on home soil in the capital city.

意大利排球俱乐部在这次的欧洲排球锦标赛中双喜临门，一举囊括男、女冠军，拉韦纳队星期天在瑞典获得男子冠军，罗马队在首都家乡的土地上获得女子冠军。

It is thus suggested that the impact of the five-years reafforestation patterns on the SOC in the 0～60 cm soil layer is insignificant.

分析认为，5年的退耕还林经营对0～60 cm土层SOC的影响有限。

In period Ⅲ, forest lands increased by 11.8% as the results of afforestation and reafforestation aiming at water and soil conservancy.

人类活动使得流域总蒸发和人渗增加，从而改变水量平衡，径流对降水的响应变得迟缓。

The concentration and inventory of SOC and the decreasing magnitude of SOC with the soil profile depth under all the studied reafforestation patterns were lower than those under shrubbery land conditions, which received the least impact of land use change.

9与农耕地相比，退耕还林实施5年后，大部分退耕模式下0～30 cm的土层SOC含量和碳密度都有不同程度的提高，但在整个0～60cm土层，SOC含量和碳密度没有显著变化(个别模式甚至还有一定程度的下降)。

I know my happiness is held firmly in my hands and it is with its real root in the fertile soil, but not in the air.

我知道我的幸福牢牢地握在自己的手中，有实实在自的根基而不虚无。

This idea, this root thought buried in the soil inside Although early or late but the real root.

这个念头、这个根埋在思想的土壤里面虽然很早，但真正生根还是很晚。

Many recalcitrant organic molecules are naturally degraded in the soil.

很多顽强的有机分子，在土壤中都自然地被降解了。

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。