Study on the Suitable Density of Hardwood-cutting of Lonicera caerulea
[Objective]By studying the effect of density on the hardwood-cutting seedling cultivation of Lonicera caerulea,to provide theoretical basis for determining the most suitable density in production.[Method]Using 1-year-old branches as experimental materials,12 treatments were set up in a plastic greenhouse before sprouting in spring.Density effect analysis was conducted using rooting,growth,quality,and economy as indicators.[Result]The results showed that when the density exceeded 200 plants per square meter,with the increase of cutting density,the initial rooting time of the seedlings was delayed and the rooting period was prolonged.The rooting rate,seedling rate of cuttings,and the uniformity,quality,autumn preservation rate of seedling are all showing a downward trend.The economic performance of seedling cultivation per unit area shows a trend of first increasing and then decreasing.Low density cutting is beneficial for promoting rapid rooting of cuttings,increasing rooting rates,and increasing the proportion of high-quality seedlings,while high density cutting is beneficial for increasing the yield of seedlings per unit area.[Conclusion]When the cutting density is within the range of 300-400 plants per square meter,the economic yield is better,while within the range of 300-350 plants per square meter,the production applicability is the best.
万方数据
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