previously cultivated field是什么意思

网络释义

用法例句

Two uplands of different reclamation years(since 1987 and 1993,respectively) were selected in our study to research the effect of cultivation years, precipitation,soil moisture and plant on N2O emission.

以三江平原沼泽湿地不同开垦年限(1987年、1993年开垦)的旱田(种植方式为大豆-冬闲)为研究对象,探讨了种植年限、降雨、土壤湿度以及植物参与对旱田N2O排放的影响。

Based on estimation of soil carbon pools and their variances at the county level with the aid of the DNDC model,farmland soil carbon pool saturation levels,soil carbon sequestration potentials,and differences between upland and paddy field in carbon sequestration capacity in various provinces of the country were analyzed.

在利用反硝化-分解(DNDC)模型估算中国分县农田土壤碳库及其变化量的基础上,分析中国分省农田土壤碳库的饱和水平,估算各省市自治区农田土壤的固碳潜力,比较旱田与水田固碳能力的差异。

The variety of weeds in weed bank of dry farmland of Changchun suburb under different ways of rotation was investigated The results showed that there were 8 species of weeds, belonging to 5 families, mainly distributing in 0～10 cm deep soil.

对长春市郊区不同轮作方式旱田的土壤杂草种子库中杂草种类进行了调查。

A New Record of Lindernia All. in Zhejiang

浙江母草属一新记录植物——旱田草

QTL Mapping and QTL × Environment Interactions of Appearance Quality in Upland Rice Introgression Lines under Upland and Lowland Environments

利用旱稻导入系定位水、旱田外观品质的QTL及土壤水分效应分析

This paper analyzed the yield performance by applying different quantity DCD and nitrogen fertilizer in water field and dry field.

分析了水田和旱田应用双氰胺(不同用量+氮素)的增产效益。

Farmland Drought Defence and Drought Resistance Measure in Semiarid Loess Plateau

黄土高原半干旱区农田干旱防御与抗旱措施

Experiment in Dry Nursery Weed Control by Stomp 33% EC

33%施田补乳油防除旱秧田杂草试验

Farmland Drought Management and Measure Selection in Semiarid Region on the Loess Plateau;

黄土高原半干旱区农田抗旱管理与措施选择

He heard that they were planning to turn more land into rice-fields.

他听说他们计划把更多旱地改作稻田。

Save present surpluses for future deficiencies

池塘积水因防旱,田地深耕足养家

These tree will shield off arid wind and protect the field.

这些树林能挡住旱风,保护农田。

These trees will shield off arid wind and protect the field

这些树林能挡住旱风,保护农田

These trees will shield off arid winds and protect the fields.

"这些树林能挡住旱风,保护农田。"

Each of the total Cd absorptivity of paddy field and nonirrigated farmland is 1.67% and 2. 21%.

水田和旱地苎麻总吸镉率为1．67％和2．21％。

After months of drought, the fields were crusted over.

经过几个月的干旱，田地都变成干块。

Research on a Modern Field-project Mode in the District of Rice-xerophyte Rotation;

水旱轮作区现代化田间工程模式研究

Study on Comprehensive Improvement Techniques of Ecological System of Cotton Field in Dry Land;

旱地棉田生态系统综合改良技术研究

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

The Study on Difference of Water and Fertilizer Effect of Dry-land Farming in Loess Plateau;

黄土高原旱作农田水肥效应差异研究

Expansion mechanism of farmland at a village in Horqin steppe of northern China;

半干旱草原牧区村庄的农田扩张机制