长期定位试验

在中国科学院红壤生态开放实验站布置田间长期定位试验，研究施肥条件下瘠薄红壤的肥力恢复特征，本文报道土壤生物化学性状的变化。

A long-term field experiment was conducted at the Ecological Experimental Station of Red Soil , Chinese Academy of Sciences in order to investigate rehabilitation of fertility in infertile red soils with application of fertilizers .

通过对湖南新化、宁乡、株洲、桃江、武岗5个国家级稻田肥力长期定位试验点18年的田间定位试验，研究了不同施肥方式下0-20cm土层土壤有机质和全N含量的演变规律。

Changes in soil organic matter and total nitrogen in the 0 - 20 cm soil layer of paddy fields under different fertilization treatments were monitored and studied at 5 long-term field experiment sites ( 1986-2003 ) .

通过长期定位试验，研究不同植被覆盖与施肥管理对黑土活性有机碳库形成及碳库管理指数ICM的影响。

Effects of vegetation and fertilization on black soil labile organic carbon and carbon management index ( ICM ) were studied in a long-term fertilization experiment .

新疆灰漠土不同施肥制度的12年长期定位试验结果表明，N、NP、NK、NPK处理小麦某些品质指标较CK有不同程度的改善；

The results of 12-year located fertilization in grey desert soil of Xinjiang showed that treatments of N , NP , NK , NPK could improve the grain quality in some indexes compared with CK .

利用长期定位试验，比较了长期施用含SO2-4和Cl-化肥22年后稻田土壤的pH值、养分状况及其吸附解吸特性。

The influences of pH , nutrient situation and absorb ? desorption of paddy soil after 22 years long ? term experiment of applied inorganic fertilizers with SO 2 - 4 or Cl - were studied .

采集长期定位试验（14年）土壤（棕壤）进行盆栽试验，并应用同位素15N示踪技术研究了土壤中微生物对肥料氮的固持及其动态。

The immobilization of fertilizer N by soil microbes and its changes in brown soils of different fertilization treatments were studied by a 14-year field location experiment using the 15N isotope tracer technique .

本研究在典型的旱作农业区以长武农业生态试验站的长期定位试验为基础，研究了长期施肥对小麦产量、氮淋溶、N20排放、CO2排放以及土壤肥力的影响。

Based on the long-term fertilization experiment at the Changwu Agro-ecological experimental station in the typical dry-farming area , the objective of this work was to study the effect of fertilization on wheat yield , nitrate leaching , N2O emission , CO2 emission and soil fertility . 1 .

应用综合评分法对新疆国家灰漠土基地1990~2002年长期定位试验土壤监测数据进行计算分析。

We evaluate Grey desert soil in Xinjiang by index method .

长期定位试验下农田保护性耕作的效益分析

Benefit Analysis on Conservation Tillage in Farmland under Perennial Orientation Research

摘要选用热带主要牧草草种进行长期定位试验。

A long-term trial had been carried out on tropical forages .

土壤肥力长期定位试验研究初报

A Preliminary Report on Long-term Stationary Experiment on Soil Fertility

长武旱塬轮作与肥料长期定位试验

Long-term Rotation and Fertilizer Experiments in Changwu Rainfed Highland

利用22年肥料长期定位试验，研究施肥对土壤钾素状况的影响。

Balance status of potassium in soil with 22 years long-term fertilization were studied .

水稻长期定位试验软件分析结果

The Result of the Analysis on the Software for Long-term Location Experiment on Rice

长期定位试验对水稻田土壤甲烷氧化活性和甲烷排放通量的影响

Effect of long-term fertilization on the methane oxidization and the methane emission in paddy soil

化肥与有机肥及两者配施长期定位试验

Location of chemical fertilizers and organic manures

太湖地区黄泥土水稻适宜施氮量研究&长期定位试验

Economical Nitrogen Application in Permeable Paddy Soil in Taihu Region & A long term fertilization experiment

长期定位试验地耕层土壤氮素空间变异性及其应用

Spatial Variability of Soil Nitrogen in Cultivated Horizon and Its Application in a Site-specific Long-term Experimental Field

通过黑土长期定位试验，查明了长期不同施肥条件下，土壤磷素积累及有效性。

The soil phosphorus accumulation and its availability were tested through long term and fixed-site trails for black soil .

黄土高原旱地肥料长期定位试验研究&氮磷化肥利用率与硝态氮累积

Study of long-term fertilizer located test in dry land of Loess plateau-using rate of N P and no_3-n accumulation

有机无机肥长期定位试验土壤小麦季氨挥发损失及其影响因素研究

Ammonia Volatilization from Soil as Affected by Long-term Application of Organic Manure and Chemical Fertilizers During Wheat Growing Season

长期定位试验土壤钾素肥力变化及其对不同测钾方法的响应

Change of Soil Potassium Fertility in Long-Term Located Field Experiment and Comparison of Different Methods to Measure Potassium Change in Soil

为了给紫色土合理施钾和提高钾肥利用效率，在国家紫色土肥力与肥料效益监测基地长期定位试验中，研究了不同施肥对冬小麦钾素吸收利用的影响。

Wheat K absorption and utilization were studied on the national purple soil fertility and fertilizer ( efficiency ) monitoring base .

本文介绍了灌溉试验、旱棚试验与长期定位试验等几种水肥效应常用研究方法的设计原理及不足；

This paper introduced the design principles of several commonly used methods in researching the effect of water and fertilizer , e. g.

通过连续8年长期定位试验，研究了不同施肥方式对燕山山麓平原高产粮区褐土土壤肥力和作物产量的影响。

A 8 years long term experiment was conducted on the high yield area of plain at the foot of Yanshan mountain .

黄土高原旱地轮作与施肥长期定位试验研究Ⅱ.土壤酶活性与土壤肥力

Study on long-term experiment of crop rotation and fertilization in the loess plateau ⅱ . Relationship between soil enzyme activities and soil fertility

肥料长期定位试验设在浙江金华市农业科学研究所和金华市石门农场。

Two long-term NPK experiments were conducted in Jinhua Institute of Agricultural Sciences and Shimen Farm , Zhejiang province of China , separately .

本试验为中长期定位试验，试验地点在中国科学院沈阳生态实验站，旱地和水田各设三个不同的施肥处理。

The field experiment is a medium and long term one , which locates at Shenyang ecological experimental station , Chinese Academy of Sciences .

本文用黄土高原长武农业生态试验站的冬小麦长期定位试验资料对改进的随机动力学水平衡模型进行了准确性检验。

The validity of the modified stochastic dynamic water balance model is verified by long term experimental data of winter wheat field in loess plateau .

利用长期定位试验研究了稻麦轮作条件下不同耕作方式和培肥制度对土壤性质的影响。

A long-term experiment was used to study the effect of different tillage methods and different fertilizer management on soil properties in rice-based cropping system .