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封闭期是指为了种籽生产而在春末停止放牧或停止刈割的时期。封闭朝的确立要求既有利牧草的营养生长以作饲料;又让初夏时开花结实良好,同时,适当推迟种籽收获时间,以便合理安排大面积种籽生产的收获顺序。 正确灵活地运用封闭期,是牧草种籽生产的一项重要管理技术。封闭期过早,不能充分利用牧草的有效潜力。封闭过晚不能抽穗结实,造成生产上的损失。本试验在于寻找经济。合理的封闭日期,获取最大的经济效益。
Closure refers to the period of stopping grazing or stopping mowing in late spring for seed production. The closure of the establishment of the DPRK requires both the vegetative growth of forage for feed; let the flowering and fruiting good early summer, while the appropriate postponement of seed harvest time in order to reasonably arrange the harvest order of large-scale seed production. Correct and flexible use of the closure period is an important management technique for forage seed production. Closure period is too early, can not take full advantage of the effective potential of pasture. Closed too late can not be heading strong, resulting in loss of production. The test is to find the economy. Reasonable closed date, access to the greatest economic benefits.