The reason of soil nutrients change was analyzed.
文章还对土壤养分的变化的原因进行了分析。
The maladjusted soil nutrients show great inconsistency.
土壤养分失调，矛盾突出。
Changes of soil nutrients occurred mainly in the topsoil.
这些变化主要发生在土壤表层。
Water stress can decrease the availability of soil nutrients.
水分亏缺可使土壤养分的有效性降低。
Soil nutrients loss is the main way of non point pollution from farmland.
土壤养分流失是农田非点源污染的主要形式。
Green cover; Soil nutrients; Enzyme activity; Photosynthesis; Fruit quality.
生草；土壤养分；酶活性；光合作用；果实品质。
To make analysis of soil nutrients and work out plans for applying fertilizer.
土壤全养份分析，制定施肥方案。
Soil nutrients not only have spatial variability, but also change with the time.
土壤养分不仅具有明显的空间变异，而且在时间上也表现出一定的变化。
These perennial forage can effectively control soil erosion and debility of soil nutrients.
这些多年生牧草能有效地控制土壤侵蚀和养分亏损。
Tillage practice had important effect on soil nutrients loss and soil degradation in the fragile karst ecosystem.
耕作对喀斯特脆弱生态系统土壤具有重要影响，是造成土壤养分流失、退化的主要原因。
Regionalized fertilization technology was studied based on the relationship between citrus yield and soil nutrients.
根据土壤养分与柑桔产量动态变化规律，制定出适合本柑桔园的分区施肥方案。
The feature of soil profile and the contents of soil nutrients were determined after 2 years plantation of leucaena.
并测定和比较了2年生银合欢林地和相应荒地的土壤剖面性状及养分含量。
The reconstructive efficiency of soil available nutrient pool was dependent on the surplus or deficit of soil nutrients.
土壤中赢余（亏损）的养分在养分库重建中的作用可以用速效养分库重建效率来表示。
Multiple variable indicator Kriging method is also proved to be an alterative for integrated evaluation of soil nutrients.
同时也证明了多变量指标克里格法在土地养分状况的综合评价中应用的可行性。
With the degeneration of vegetation, decreasing of soil nutrients results in regressive successions in red earth ecosystem.
随着植被的逆向演替，土壤养分减少，导致低丘红壤生态系统恶化。
On the premise of identity for site conditions, the annual dynamic changes of soil nutrients under larch plantation were studied.
在立地条件一致的前提下，研究了落叶松人工林土壤养分含量的年动态变化趋势。
The spacial distribution of soil nutrients was studied at Hongta district of Yuxi city, Yunnan province by applying GPS and GIS technique.
采用GPS和GIS技术研究了云南省玉溪市红塔区植烟土壤养分分布状况和施肥分区。
Hunger in Africa will be solved partly by helping farmers get the improved seeds, water pumps and soil nutrients they need for a good harvest.
向农民提供他们获得丰收所必需的良种，灌溉设备以及化肥可以部分地解决非洲的饥饿问题。
“We don’t think this can persist for too long because other limitingfactors will come into play, like water availability and soil nutrients, ” hesaid.
他说："我们认为这种趋势不会持续太长时间，因为将会出现一些限制因素，像水分的可利用性及土壤养分。"
The results in this study recommed that the length and gradient of the slope should be considered in the soil nutrients management on sloping land.
因此，在坡地土壤养分调控中必须综合考虑坡度和坡长因素。
It also shows that the growth of plantation is greatly affected by the content of soil nutrients specially total n, total K and soil organic matter.
林分生长与林地土壤中全n、全k以及有机质等养分的含量显著相关。
Gravel dust (see our global ideas bank's "Saving the Planet With Gravel dust") could be used to supplement the soil and increase soil nutrients even further.
碎石子可以用来补充土壤，增加土壤养分。
Soil nutrients analysis was carried out in Haidian District in 2000. It was showed that soil nutrients content in Haidian was at middle level in general.
2000年海淀区农田耕层土壤养分普查结果表明，全区土壤养分含量整体处于中等水平以上。
The content of soil nutrients, especially available nitrogen, phosphorus and potassium is one of the important bases to instruct scientific fertilization.
土壤碱解氮、速效磷和速效钾等养分的含量是指导科学施肥的重要依据之一。
Based on comparative analysis on spatial temporal distribution characteristics of soil nutrients of typical dam land in Beigou small watershed of Yan 'an City.
通过对延安市北沟小流域典型坝地土壤养分的测定，分析比较了其土壤养分时空分布特征。
Results showed that soil nutrients mainly migrated with sediment in unsoluable forms, while the amounts of soluble nutrients removed with runoff were very little.
结果表明：土壤养分主要是以不溶态的形式随泥沙迁移，随径流迁移的可溶态养分很少；
In this paper, we discuss soil nutrients change status of paddy rice land in Jidong coastal area since 1980, to analyse the reasons and put forward a modified way.
本文论述了自1980年调查以来冀东滨海稻区耕地土壤养分的变化状况，分析了土壤养分含量变化的原因，提出了改良途径。
The quantities distribution of rhizosphere microorganisms were positively correlated with the soil enzymic activities, contents of organic matter and soil nutrients.
微生物的数量分布与土壤酶活性、有机质含量、土壤养分状况等强弱呈正相关关系。
The quantities distribution of rhizosphere microorganisms were positively correlated with the soil enzymic activities, contents of organic matter and soil nutrients.
微生物的数量分布与土壤酶活性、有机质含量、土壤养分状况等强弱呈正相关关系。
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