1.
Investigation on the Best Model of Spring Wheat Density and Its Farmland Ecological Efficiency
春小麦密度及农田生态效应优化模型的探讨
2.
The Farmland Ecological Effects and the Crop Yield-Increasing Mechanisms of Different Mulching Materials;
不同覆盖物的农田生态效应与作物增产机理研究
3.
On Analyzing the Farmland and Irrigation Works Construction and Its Ecological Effects in Tang Dynasty;
唐代农田水利建设及其生态效应分析
4.
The Effect of Ecological Field of Farmland Shelter-Forest on Rainfed Highland in the North of Weihe River;
渭北旱塬农田防护林生态场效应研究
5.
Ecological Functions of Cultivated Species Interaction in Farming System;
农田系统中物种间相互作用的生态学效应
6.
Study on the Remediational Technology of Soil Ecological Environment and the Effect in Facility Farmland;
设施农田土壤生态环境修复技术及其效应研究
7.
Research on Production and Ecological Effect of Different Vegetation and Different Tillage Methodsin Northern Plateau of Hebei Province China;
冀西北高原不同植被与农田保护耕作的生产与生态效应研究
8.
Research on Ecological Effect of Different Vegetation and Different Tillage Methods in Northern Plateau of Hebei Province China;
冀西北高原不同植被与不同耕作方式农田的生产生态效应研究
9.
A Primary Study on Ecological Effect of Protective Forest in West of Mudanjiang City
牡丹江西部农田防护林生态效益研究
10.
Study on Integrated Assessment of Positive and Negative Value of Beijing Cropland Ecological System;
北京郊区农田生态系统正负效应价值的综合评价研究
11.
Study on How the Filtration Irrigation Takes Effects on the Ecological Systems of the Maize Cropland in the Loess Hills Area;
渗灌对黄土丘陵区玉米农田生态系统的效应研究
12.
Research on Nitrogen Recycle and Its Effect on Environment in Dry-Land of Loess Plateau;
黄土高原旱地农田生态系统N素循环及其环境效应研究
13.
Ecotoxical Effects and Mechanism of Excessive Acetochlor and Urea to Eco-system in Phaeozem Cropland;
乙草胺、尿素过量使用对黑土农田的生态毒理效应及机理研究
14.
Estimation of Net Carbon Balance and Benefits of Rice-rice Cropping Farm of a Red Earth Paddy Under Long Term Fertilization Experiment from Jiangxi,China
红壤丘陵双季稻稻田农田生态系统不同施肥下碳汇效应及收益评估
15.
Recearch on the Ecological Effect of "1 Ton Sucrose Per 667M～2 Field" Ecosystem of Different Planting Structure;
不同结构的“吨糖田”蔗园生态效应研究
16.
Effectiveness of Biogas Manure Application Combined with Chemical Fertilizer on the Rice Field Ecosystem
沼肥配施化肥对稻田生态系统的效应
17.
Study on Ecological Benefits of Populus Popular s Farm-shelter Forest in Hetao-irrigated Region;
河套灌区小美旱杨农田防护林生态效益研究
18.
Analysis of Bio-physical Controls on Light Use Efficiency in a Farmland Ecosystem
农田生态系统光能利用效率及其影响因子分析