The characters of arthropod communities were studied in three different habitats of the organic pear orchard, in Shunyi, Beijing.

To realize the community structure and biodiversity of arthropod community in the organic pear orchard, and to understand the effect on the arthropod community of different density planted areas with the managements of covering film and fertilization in this kind of pear orchard, and to offer some theory on the IPM of the orchard.

Soil nutrient states and fertilizing strategy for the main pear orchards in Fuquan city;

Occurrence regularity and control techniques of Dynastes gideon in pear orchard;

Comparison of water consumption in a pear orchard estimated by heat pulse method and infrared gas analyzer.

Yichun yard,which belongs to the Imperial Music Office,held essential position in the music organizations,and Li Yuan also is an important conservatory organization in the Tang Dynasty.

The actors for the pear garden came into being in the second year of Kaiyuan.

To be confronted with restricting chemosynthesis pesticides used in organic orchards,insect pest control had become a bottleneck.

Application research of drip irrigation and fertilization in organic tea garden

A survey of species richness and abundance of insects, mites, and spiders within or around the tea clumps from an organic tea garden, a safety tea garden, and a common tea garden was conducted in the southern Anhui Province from July of 2002 to July of 2003.

The nutrients contentt,he number of microorganism and activity of edaphon in soil of Gutongling 4-year-old,10-year-old and 16-year-old organic tea garden were measured.