地力

为了培肥地力，模式养分平衡要求N盈余在40%以上，以实现绿洲农业生态系统养分良性循环。

In order to fertilize the soil fertility , the model of nutrient balance demands that the surplus of N should be over 40 % so as to achieve a good nutrient cycle in the oases agro-ecosystem .

种植苜蓿改良培肥地力的研究初报

Initial research report on soil fertility improvement by planting Medicago sativa

地力耗尽的土地上种不了庄稼。

You cannot grow crops on exhausted land .

这一地区土地的地力都已耗尽，不能再种庄稼了。

The whole area has been farmed out , and no crops will grow there now .

基于GIS的广德县耕地地力定量评价

Quantitative Assessment of Cultivated-Land Capacity in Guangde County Based on GIS

GIS支持下的耕地地力评价方法研究

Research on the evaluation method of farmland supported by GIS

GIS支持下的莆田县耕地基础地力评价与可持续利用对策

Quality evaluation and sustainable use countermeasures of cropland in Putian County by GIS

基于GIS的华中丘陵区耕地地力评价研究

Evaluation of the farmland productivity of hilly region of central China based on GIS

基于GIS的县域耕地地力评价、动态分析及改良利用研究

GIS Supported Cultivated Land Fertility Evaluation , Dynamic Analysis , Improvement and Utilization at County Level

基于GIS的鄂州市地力调查与质量评价及乡镇农田速效养分评价与应用

Assessment of Soil Quality and Environment for E-Zhou City , Effective Nutrient Evaluation and Application in Township Cropland Based on GIS

通过这些模型方法与GIS和RS结合，快速准确地完成耕地地力评价，并将评价结果成图输出。

Being integrated these methods and models with GIS and RS data , the productivity of cultivated land is evaluated rapidly and exactly .

本研究以SOTER数据库为基础，建立了基于AHP法的耕地地力评价系统。

A natural productivity evaluation system was established based on SOTER and AHP .

地力水平与施氮量对小麦淀粉RVA谱特征的影响

Effects of N Application Rate on RVA Profile Characters under Different Land Fertility Levels

本法可用于不同深度土壤层CO2存储量、释放量变化的测算，以及植被或地力恢复速率的评价。

The method can be used for estimating CO2 storage in soil , measuring the changes of CO2 released by soil and evaluating the recovery rates of vegetation and land productivity .

结果表明：小区试验不施氮对照（CK）处理产量达到了7855.0kg/hm2表明洪湖试验地土壤基础地力很好，土壤供氮能力很强。

The grain yield of the control ( no N application ) reached 7855.0 kg / hm2 showed that soil N fertility was very high at Honghu .

为此，本文以湖北省鄂州市为试点进行了耕地地力调查，利用先进的计算机技术及GIS工具，实现了对耕地地力的调查评价。

This dissertation , taking E Zhou city of HuBei province as an example and employing advanced technology of computer and GIS ( Geographical Information System ) carried out the survey of land capacity and its assessment .

研究建立了荆州市耕地地力评价指标体系，选取了有机质、有效磷、速效钾、有效锌、质地、pH、剖面构型、地貌类型、成土母质、灌溉保证率和排涝能力11项指标。

The system have 11 indicators , including the organic matter , phosphorus , potassium , zinc and effective , texture , pH , profile configuration , landform type , soil parent materials , guaranteed rate of irrigation and drainage capacity .

而速效钾含量变化规律性不明显。因此，杉木初植密度尽量控制在2805&3750株／hm2之间，以利于杉木产量提高和地力维护。

The planting density of Chinese fir must be confined from 2805 to 3750 trees per hectare in order to raise the yield and maintain the soil fertility .

首先根据CCD摄像机采集的图像建立虚拟环境模型的初始模型，再利用远地力觉和位置传感器信息对初始模型进行校验。

First , the model of the slave hand and its environment was initialized with images captured by a CCD camera , then the initialized model was modified by remote force and position information to ensure its accuracy .

长江上游典型地区基于SOTER数据库的耕地地力评价

Natural Productivity Evaluation of Cultivated Land Based on SOTER Database in the Typical Region of Upper Reaches of the Yangtse River

低施肥水平不足以弥补竹林高产出所消耗的养分，K素在竹林培育和土壤地力维持及养分平衡中有重要作用。

The result indicated that low level fertilization can not recruit the heavy exhaust of the high production in the bamboo forest , and K element has an important affect on the cultivate of the bamboo forest , soil fertility maintain and keep nutrient balance .

GIS是依托地理科学的信息技术，在地理科学领域得到了更加广泛、深入的应用，如耕地地力评价、土地适宜性评价、土地资源管理与规划等。

Depending on improvement of geographic information technology , GIS is widely used in many fields of geography , such as productive evaluation of cultivated land , land suitability assessment , land resources management and planning . GIS also plays an important role in country land resources management .

稻田地力贡献与合理施肥

Study on the Contribution of Paddy Soil Fertility and Optimum Fertilization

寒地稻草还田培肥地力技术研究

Study on Straw Returned Field and Enrich Fertility in Cold Region

沿海地区地力衰退的原因分析及防治措施

Reasons Analysing for Land Fertility Declining and Countermeasures in Coastal Area

改土培肥，提高地力。

And 5 , ameliorating soil and improving soil fertility .

毛竹竹阔混交林群落地力保持研究

Study on the Productivity Maintenance of Bamboo and Broad-leave Tree Mixed Stands

基础地力中等的耕地占50%；

The infield with medium soil fertility is 50 percent ;

湖北省苇田土壤肥力状况与地力分级

Fertility conditions and quality assessment of reed soil resource in Hubei Province

河南省耕地地力调查与评价

Investigation ard Evaluation on Cultivated Land Fertility of Henan Province