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龙井县于1984年春,选择境内平均坡度为25°,坡向多为阴坡的智新林场,首次进行了鱼鳞松的飞播造林。播种面积10,023亩,有效播种面积占90％,平均亩播种量为1.2市斤,播后每亩平均出苗1,472株。经过秋后普查,幼苗生长良好。通过普查,有以下三个问题值得注意并需要改进。即:一、凡种子落到清理林地后的发芽率高,幼苗生长也好。未经整地与清林的则发芽率很低,相差一半。二、低飞播种比高飞的效果好,一般是航高30—60米的,平均每亩出苗2,100株,航高150—200米的只有100株。
Longjing County in the spring of 1984, the selection of the average gradient of 25 °, the slope of the slope for the Chi-xin Forest Farm, for the first time the song sylvatica aerial sowing. Sowing area of 10,023 acres, 90% of the effective sown area, the average mu sowing rate of 1.2 kg, after sowing an average of 1,472 plants per acre. After autumn census, seedlings grow well. Through the census, there are three issues that deserve our attention and need improvement. That is: First, where the seeds fall into the clean-up after the high rate of germination, seedling growth is good. Without land preparation and Qinglin germination rate is very low, a difference of half. Second, low-flying sowing is better than flying, generally 30-60 meters altitude, with an average of 2,100 plants per acre and an altitude of only 150-200 meters.