1.
Encourage the use of Chinese goods and improve local products.
提倡国货，改良土产。
2.
reduce soil acidity and improve soil texture
减轻土壤酸性和改良土壤结构
3.
a farm with 50 acres of unimproved and 68 acres of improved land; unimproved woodlands.
拥有50英亩未改良土地和68英亩改良土地的农场；原始林地。
4.
It is important to enrich the soil before planting.
种植前先改良土壤是很重要的。
5.
Modification reduces capillary conductivity.
改良土壤会降低毛细管传导度。
6.
Study on Soil Improvement Benefit of Coastal Protective Forest in Shanghai City;
上海市沿海防护林改良土壤效益研究
7.
The barren land has been turned into fertile fields.
贫瘠的土地已改成良田。
8.
Depreciation Expense-Land Improvements
折旧费用-土地改良
9.
Effect of Soil Ameliorants on Salinized Soil;
土壤改良物质对盐渍化土壤改良的作用
10.
Improvement Effects of Soil Amendments on Soil Water Retention Capacity in Loessial Soil
土壤改良剂对黄绵土持水性能的改良效应研究
11.
Improved on Modifier Formula and the Results of Improving of Severe Soil Salinity;
重度盐碱土改良剂配方及改良效果的研究
12.
Effects of Different Modifiers on Plant Growth and Pb-Cd-Contaminated Soil;
不同改良剂对Cd、Pb污染土壤改良效果的研究
13.
Experimental research on stabilizing expansive soil by CTMAB
使用CTMAB改良剂改良天然膨胀土的试验研究
14.
Research on the Effect of Bentonite and FWFPM to Acid Soil Amendment;
膨润土和塘泥对酸性土壤的改良研究
15.
A Study on Physical and Chemical Characteristics and on the Technology to improve the Soil from Rice Field
“稻改茶”土壤理化性状与改良技术研究
16.
Study the Effects of Soil Improvement on Acid Soil in the South of China
不同土壤改良剂对南方酸性土壤的改良效果研究
17.
The land can be improved, but a lot of things must be done first.
土地能够被改良，但必须做许多事情。
18.
We improved the farm land by spreading earth over the sand.
我们在沙上撒土，以此改良耕地。