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通过建立种子园,提高林木种子遗传品质,已成为林木选择育种的重要途径。如何提高种子园种子产量和播种品质,提高经济效益,是种子园经营管理的核心内容。因此,从1987年开始,我们在遵化县东陵林场油松种子园进行了施肥促进开花结实试验。一、试验材料和方法遵化县东陵林场种子园位于燕山南麓,北纬40°12′,东经117°57′,海拔120米,坡度为8—10度,土层厚度50—60厘米,坡积母质,土壤主要营养元素化验结果见表1。试验设在无性系种子园区,选择5个无性系进行试验,每个无性系选择4个分株生长状况相近的母树作为试验样株,其中1株为对照(不施肥),母树年龄为13年。1987年6月中旬对试验样株进行施肥,采用的化肥为磷酸氢二氨,每株施肥量为0.5公斤。采用辐射状沟施的方式,施肥后沟中
Through the establishment of seed orchard, to improve genetic quality of tree seeds, forest has become an important way to choose breeding. How to improve the seed orchard seed yield and sowing quality, improve economic efficiency, is the seed orchard management and management of the core content. Therefore, since 1987, we have conducted fertilization in the pine seed orchard of Dongling Forest Farm in Zunhua County to promote flowering and fruiting. First, the test materials and methods Zunhua County, Donglin Forest Seed Park is located in the southern foot of Yanshan, latitude 40 ° 12 ’, longitude 117 ° 57’, 120 meters above sea level, the slope of 8-10 degrees, 50-60 cm of soil thickness, Slope plot parent material, the main nutrient elements of soil test results in Table 1. The experiment was conducted in clonal seed orchard and five clones were selected for testing. Four clones with similar clonal growth status were selected for each clonal plant as the test sample. Among them, one was a control (no fertilization) and the mother tree was 13 years old . In mid-June 1987, fertilizers were applied to the test samples. The fertilizer used was diammonium hydrogen phosphate, and the amount of fertilizer applied per plant was 0.5 kg. The use of radial ditch Shi way, after the fertilizer in the ditch