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在雨季造林中,降水对直播出苗的影响很大,我们为了摸索群众性雨季直播造林经验,并为飞播提供依据,于1983—84两年在辽西凌源县对油松人工直播造林进行了试验。由于掌握了可靠的播期,取得了比较满意的造林效果。一、试验准备和方法两年试验充分利用当地气候资源,按播后20天内降水量应为80mm左右和幼苗不少于60天的生长期要求,在5月下旬至7月上旬时段内,本着雨前撒播,雨后出苗的设想,尽可能的缩短撒播种子在地表停留时间,统计出以6月2—5候、7月1—2候为最佳播期作
In the afforestation of the rainy season, precipitation has a great influence on the direct seeding emergence. In order to explore the experience of direct seeding afforestation in the mass rainy season and to provide the basis for the aerial seeding, we experimented the artificial seeding afforestation of Pinus tabulaeformis in Lingyuan County, western Liaoning Province in 1983-84 . Thanks to the reliable sowing date, it has achieved relatively satisfactory afforestation effect. First, the test preparation and methods Two years of experiments make full use of local climate resources, according to 20 days after sowing precipitation should be about 80mm and seedlings of not less than 60 days of the growing period requirements, in late May to early July period, the Sowing before the rain, the idea of emergence after the rain, as far as possible to shorten the sowing time on the surface of the seed, statistics to June 2-5 Hou, July 1-2 best for sowing