Study On Annual Growth And Development Law And Pruning Technology Of Cut Rose In Yinchuan Area

Today,the planting area and sales volume of cut rose in China rank first in the world.In this experiment,13 cut rose varieties introduced from Yunnan were used as experimental materials to study the cold resistance of different cut rose varieties,and the varieties with strong cold resistance were selected.Taking the selected varieties as test materials,the annual growth and development law of cut rose was studied,and the growth model was established.At the same time,pruning experiments were carried out to analyze the impact of Pruning on the yield and quality of cut rose,and establish the cultivation system of cut rose in this region.The main research results are as follows:1.Screening and cold resistance evaluation of new cut rose varieties in Yinchuan area.The cold resistance of 13 introduced cut rose varieties was studied.All 13 cut rose varieties could grow and bloom normally.Champagne has "the strongest cold resistance",vigorous growth,pure color,no damage to petals,strong disease resistance and high content of soluble protein;Followed by Rose Terrazza Aries,Freud and Nightingale,with large flower diameter opening,more petals and high soluble sugar content;ocean song and pink snow mountain have weak cold resistance,slow growth,few petals and high tissue water content.2.Study on annual growth and development of cut rose in Yinchuan area.The growth cycle of cut rose is related to temperature.With the increase of temperature,the growth of flower branches accelerates,the shorter the duration,the less nutrient accumulation and weak growth of flower branches.The flower branch growth of cut rose is an "s" curve,showing a slow fast slow process,which conforms to the logistic growth model and establishes the growth equation;The flower bud growth accorded with the simple linear model,and the flower bud size equation was established;Annual growth and development model of Cut Rose3.Effects of pruning on yield and quality of cut rose.The yield and quality of spring and autumn cut rose in Yinchuan area are higher and better than those in summer and winter respectively,indicating that it is suitable to develop the production of spring and autumn cut rose in Yinchuan area.Appropriate pruning period and method can improve the yield and quality of cut rose.C pruning method is suitable for "Rose Terrazza Aries" in March and may,and B pruning method is suitable for other months;"Freud" is suitable for C pruning;"Nightingale" is suitable for C pruning in March and may,C pruning in November and B pruning in other months;C pruning method is suitable for "champagne" in July and September,and B pruning method is suitable for other months.