查询词典 infertile soil

In order to study the effect of N levels on growth of summer maize under different drought degrees, a field experiment was carried out under rainproof sheds. There were seven drought treatments in which soil drying lasted 0,7,12,17,22,27,32 days and three N levels including N 0,140,280 kg/ha in this experiment.

在田间小区遮雨条件下，采用有交互作用的双因素试验方法，设置了连续干旱03~2 d 7个水分处理及N 0、1402、80 kg/hm^2 3个氮肥处理，研究施氮水平对不同干旱程度夏玉米生长的影响。

Two experiments both of simulation under rainproof shelter and plot in field were done to study the relationship between the yield of spring corn and soil moisture in the different treatments of water supply in Non-irrigated Plateau of Loess.

采用田间遮雨棚下模拟土柱的试验方法和田间小区试验方法，对黄土旱源长武塬区不同土壤水分处理下玉米产量与土壤水分关系进行了研究。

The results showed that,the relationship between the relative biomass or grain yield and the soil moisture,or the relationship between the relative biomass or grain yield and the water consumption in the simulation experiment under rainproof shelter in field ;and the re...

结果表明，无论是模拟土柱试验中，相对生物量、相对经济产量与土壤水分保证率之间的关系，或者相对生物产量、相对经济产量与相对耗水量之间的关系；还是大田小区试验中，玉米产量与耗水量之间的关系，或相对产量与相对耗水量之间的关系，它们都遵循如下抛物线变化规律：y＝ax2＋bx＋c，a、b、c为待定常数。

The characteristics of co-operation of pile and soil, reinforce mechanism, failure mode and engineering characteristics of rammer carrier CFG pile composite foundation are also researched.

研究夯扩载体CFG桩复合地基的桩土共同作用特性、加固机理、破坏模式和工程性质。

People used land for ranching by cutting down trees, resulting in loss of stability of the soil.

人们用土地放牧，而砍掉所有的树木，导致土壤失去稳定性

According to the geographic information system and the the random field, this paper studied designing the structure and function on the geography information system based on the random field of soil parameter.

本文以地理信息系统理论和随机场理论为指导，进行了基于随机场的地理信息系统的结构与功能设计。

ZD-8 separated from contaminated soil has rather strong ability for rape oil degration.

ZD - 8菌株，具有较强的降解菜油的能力。

Since mineral N is assimilated more efficiently than N2, increasing soil N supply can lead to more photoassimilate being available for shoot growth and leaf development Trolley-Henry and Raper, 1986, Cassman et al.

由于矿质N比N2可以被更有效地同化利用，增加土壤氮素供应可以导致更多的光合同化物供给植株地上部分的生长和叶的发育（Trolley-Henry和Raper，1986，Cassman等1980）。

A high performance liquid chromatography method was developed for determining carbendazim residues in rapeseed plants and soil.

采用高效液相色谱法，建立了油菜植株和土壤中多菌灵残留量的检测方法。

Rare Earth is not the ordinary "soil", but the 17 kinds of metal elements collectively.

稀土并不是普通的"土"，而是17种金属元素的统称。

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。