ECONOMICALLY PREFERRED KEY TECHNIQUES ON SHELTER BELT CONSTRUCTION ON COASTAL FARMLAND
沿海农田林网建设关键技术的经济学择优

Technical economy analysis and multi purpose preferred grey state strate gies concerning plantation tree species, shelterbelt composition and their management types on coastal farmland in Jiangsu Province have been reported. The results showed that the optimal selection of management types of windbreak network is the compound management of wood forest and fruit. And the main plantation tree species should select fast growth timber and economically high efficiency species, such as poplar, peach etc. The foundation shelterbelts, as the biggest lined network, was planted on the coastal banks; the main and assistant shelterbelts serving as moderate network can be planted by road sides and on ditch banks. The subsidiary shelterbelt as the smallest network, can be planted on ditches for desalinization and drainage purposes. Therefore, the compound structural model of multiplicity species, lined networks and shelterbelts, and more efficiency and high output products can be composed.