玉环县是位于我省东南沿海的一个半岛,东径121°12′,北伟28°10′,属于典型的亚热带海洋季风气候,但乃常受春秋的低温阴雨,夏秋的台风等灾害性天气的影响,造成作物产量的不稳定。为此,早在六十年代,该县就引种木麻黄防护林,到目前为止,保存完好的林网已起到较好的防护效益。为探讨木麻黄防护林网的防护规律,我们于1984年进行了沿海木麻黄林网防护效益的观测研究。现将研究结果 Yuhuan County is a peninsula located on the southeast coast of our province with a 121 ° 12 ’east and 28 ° 10’Beiwei. It belongs to typical subtropical marine monsoon climate, but it is often affected by low temperature rainy season in spring and autumn, typhoon in summer and autumn and other disastrous weather Affect, causing instability in crop yields. To this end, as early as the sixties, the county on the introduction of Casuarina Shelter Forest, so far, well-preserved forest network has played a good protective effect. In order to explore the protection law of Casuarina Shelterbelts, we carried out the observation and study on the protective benefits of coastal Casuarina Shelterblazer in 1984. Now the research results