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一、实验目的 在培养一年生杂交杨插条大苗中,为了摸索不同密度、不同施肥量、不同浇水次数与苗木生长的关系,找出既能生产大苗又比较经济的育苗方法,为大田育苗生产提供科学依据,我们在去年安排了此项试验。 实验的指标,主要是使当年生插条苗生长量能够赶上或超过二年生平茬苗,即根径达到三厘米以上,苗高达到三米五以上。
First, the purpose of the experiment In the annual hybrid Young Populus seedlings, in order to explore the different densities, different fertilization rates, the relationship between the number of different watering and seedling growth, to find both can produce large seedlings and more economical nursery methods for field nursery production To provide a scientific basis, we arranged this experiment last year. Experimental indicators, mainly to make when the annual growth of cuttings seedlings to catch up with or more than biennial stubble, that is, root diameter of more than three centimeters, seedlings up to three meters five or more.