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6月中旬至7月下旬是胡杨种子的成熟期,请各地林业专业户和重点户莫失良机,做好准备,大力采集。一、选择好采种母树。胡杨为雌雄异株树种。雌株叶子浅绿色,枝条细长,芽较小,整个树形矮;雄株叶子深绿色,枝条粗壮,芽较大,整个树形较高,树冠较完整。胡杨种子成熟之前,应事先在胡杨林内择其长势优良的雌株作为采种的母树,並做好标记。
From mid-June to late July is the mature stage of poplar seeds, please all forestry households and key households miss the opportunity to prepare and vigorously collect. First, choose a good seed mother trees. Populus dioecious trees. Female plant leaves light green, branches slender, smaller buds, the entire tree short; male plant leaves dark green, branches thick, larger buds, the entire tree shape is higher, the crown is more complete. Populus euphratica seed before maturity, should be selected in advance in Populus euphratica its growing good female plant as a seed tree, and make a mark.