Hoang Xuan Ty
Nguyen Duc Minh
INTRODUCTION
In order to plant Styrax tonkinensis on a large scale, to achieve high productivity and long-term management and to ensure raw material supply for industry, the three following problems relating to the field of pedology must be solved,
* Determination of the requirement of Stryrax trees on soil, to serve as a basis for planning and designing work.
* Formation of site classification for planting Styrax which can serve to determine planting sites and suitable planting and tending techniques.
* Investigating and understanding changes of soil fertility after each rotation and investigating the best management mode from a soil rehabilitation point of view.
In the years from 1966 to 1968, the first problem was investigated, but due to changes in selecting species for paper raw materials, investigation was stopped with some preliminary conclusions. According to a new decision to again use Styrax tonkinensis as raw material for the paper industry, in the years from 1973 to 1977, concentrated study was carried out on the above 3 problems in the central area of raw material supply for the paper industry.
Latest news
- Project: Study on integrated management of insect pests and diseases on Docynia indica in northern Vietnam
- Project: Study on integrated pest management of major leaf insect pests and stem borer beetles in Acacia hybrid, A. mangium and A. auriculiformis in Vietnam
- Project: Research and develop an integrated management program for control of cinnamon pests in some main cinnamon growing areas (Northern mountainous region and Quang Nam province)
- Project: Pilot plantation and completion of planting techniques of technologically advanced germplasm of Acacia auriculiformis (AA42, AA53, AA56, AA92, AA95) for sawlog in the southeast and south central.
- Project "Research on selection of varieties and intensive afforestation techniques of Prunus arborea (Blume) Kalkman for providing lager timber in the Northeast and Northwest regions, Vietnam"
Oldest news
- study on techniques for collecting and storing styrax tonkinensis seeds and establishment of seed stands ( 1973 - 1977)
- preliminary investigations of some micro-climatic factors in mixed, broadleaved forest at nuitien (huulung district, langson province) (1974-1976)
- study on regeneration techniques for poor, depleted forest at huulung by using prunus abborea andphoebe species (1972 - 1977)
- trials of planting techniques, forest enrichment at song hieu area (nghe an province) by using aglaia sp., michelia sp., chukrasia tabularis,manglietia glauca and ormosia balansae ( 1976-1977)
- study on techniques to enrich poor, depleted forest at cauhai by additional planting (1974 - 1977)
