Study on Urease Activity of Main Cultivated Soil in Guizhou

The Result of Fixed Position Test of Irrigated-cultivated Soil

灌漠土定位试验结果

Evaluation on Available Trace Elements in Cultivated Soil in Liaoning Province

辽宁省耕地有效态微量元素含量评价

Investigation of Available Silicon Content in Cultivated Soil in Jiangxi Province

江西省耕地土壤有效硅含量调查研究

Some Problems in Current Cultivated Soil Pollution Survey and Assessment in China

关于耕地土壤污染调查与评价的若干问题探讨

Characteristics and sustainable utilization of Vegetable Cultivated Soil Resources in China

我国菜园土壤的资源特点与持续利用

Image analysis of development of cultivated soil structures under non-tillage system

免耕制度下耕作土壤结构演化的数字图像分析

With productivity of cultivated grassland maintained at a high level on river land, soil water in the soil layer below 260 cm, which is usually maintained at 5.0% yearly, could not be renewed after rainy and fallow seasons.

川地人工草地在维持高生产力的情况下，260cm以下土壤层出现雨季期间及休闲期后均不能够得到水分补偿而稳定在低湿层。

The current situation of cultivated grassland and the profit analysis of replacing cropland with pasture in Tongliao district

通辽地区已垦草原现状与退耕还草效果分析

Studies on the Energy and Material Use Efficiency of Cultivated Grassland and Farmland Ecosystem in the Hilly Regions of Southern China

南方丘陵地区人工草地和旱作农田能量物质利用率

Study on Suitable Cutting Period of Cultivated Grassland in Black Beach of the Headwater Region of the Three River

三江源区黑土滩人工草地适宜刈割期的研究

Study on the Cultivated Grassland Construction in Loess Hilly-gully Areas Based on Water Balance

黄土丘陵区基于水分平衡的人工草地建设研究

The biodiversity index of cultivated grassland was also the highest.

刈草草地昆虫群落多样性指数相对较高。

Culture systems of Cultivated Grassland of Gansu Province and it's future

甘肃人工草地的栽培制度及其展望

Investigating and analysing natural and economic conditions of Kenli County, the content of organic matter, configuration of soil body, underground water table and salinity of cultivated horizon were used as the identification factors, and the evaluation criteria of land natural productivity were formulated.

本文通过对垦利县土地自然及经济情况的调查分析，选择有机质、土体构型、地下水埋深及土壤耕层含盐量为参评因素，制订了垦利县土地自然生产力评级标准；

Soil samples of cultivated horizon from Gongpeng town were analyzed in1998 and the results were compared with that in1990.

1998年对黑土区（弓棚镇）的耕层土壤养分进行分析，并与1990年该区土壤的化验结果进行了比较。

The cultivated horizon was too shallow and machinery cultivation can increase thickness of cultivated horizon effectively.

耕层土壤厚度过浅，机耕可有效增加耕层厚度；

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

长期定位试验地耕层土壤氮素空间变异性及其应用

Analysis of Effect and Reason of Increasing Yield of the Sowing of Total Cultivated Horizon on Winter Wheat

冬小麦全耕层播种增产效果及其原因分析

There were more nematode cysts in soil where the content of phosphorus and potassium were naturally rich and where the water capacity was higher. Most nema-todes inhabited in 5-30 cm cultivated horizon.

CCN多居于自然含磷、钾元素多且保水性能好的油沙土中，以5～30cm的耕作层孢囊量较多。

The results showed that relationship between the weed and the soil moisture in cultivated horizon was obvious. The monocots whose relative abundance increased with the soil moisture are the most abundant in the seriously waterlogged area.

结果表明，该地区油菜田杂草的发生特点与耕作层土壤水分含量存在明显关系：对产量危害较大的禾本科杂草在重渍害区为优势种群，其相对多度随着土壤水分的增加而增高；