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林业部发布了《1990年林业科学技术研究课题指南》。《指南》列出了12个课题,课题的名称或范围如下:主要造林树种开花结实规律和种子产量预测预报、森林病虫害烟雾载药防治技术及设备、小型遥控飞艇喷药技术、木材物理力学性质及其超微结构、难干阔叶材干燥工艺特性、湿地松工业原料基地建设及其综合开发利用战略、森林植物资源综合利用、中
The Ministry of Forestry issued the “Guideline for Forestry Science and Technology Research in 1990”. The Guidelines lists 12 topics, the title or scope of which is as follows: Flowering and Seed Setting of Major Afforestation Species and Prediction of Seed Yield, Techniques and Equipment for Prevention and Control of Forest Pest and Disease Smoke, Techniques of Small Remote Controlled Airship Spraying, Physical and Mechanical Properties of Wood And its ultrastructure, hardwood hardwood drying process characteristics, wetland pine industrial raw material base construction and its comprehensive development and utilization strategy, comprehensive utilization of forest plant resources, medium