Study On The Adaptability Of Potted Dahlia In Urumqi

This research mainly selection BaiJu, skirt sweep the snow, white butterfly, red waves, cloudlock lotus peak, sunglow sea six urumqi the people’s park introduced in2007, the species as theresearch object. The study of greenhouse, potted dahlia of planting technology points, pottedcondition dahlia cutting breeding technology, plant height control technology and floweringregulation technology, dahlia common the occurrence of plant diseases and insect pests andprevention countermeasures, hoping to help urumqi region potted dahlia further promotion andapplication to provide technical support, the main research results are as follows:(1) open field planting dahlia cultivation key points:1, devastate the land fertilization, depthto30--40cm advisable;2, planting, urumqi region planting time is commonly of April of eachyear,5months.3, remove lateral bud, side bud, reserved four main bud, keep the bottom plant oflateral bud, in order to extend the flowering;4, watering fertilizer, early to N is given priority to,more than in the middle of the applied P, K fertilizer;5, support, in the flowering to do supportsupport;6, wintering storage, storage in the environmental temperature0℃to5℃in the ditch.Potted dahlia cultivation key points:1, use cuttage seedling to prevent deterioration of variety;2, water control, cuttage seedling stage to N, K fertilizer is given priority to, more than in themiddle of the applied N fertilizer, anthesis to P fertilizer is given priority to,3, potted dahlia bestput distance is50cm-80cm;4, use heart to cultivate pick two this dahlia.(2) through the potted dahlia of cutting seedling average rooting rate of contrast test, whichsuited potted dahlia cutting seedling growth of matrix, the matrix choose water retention andpermeability are relatively good vermiculite, cuttage rooting fastest; Perlite water retention andpermeability relatively second, vermiculite particles smaller than perlite, and later on basin is noteasy to cause injury root, in the actual production of larger role. In six varieties, the BaiJu in threekind of matrix of the highest rooting rate, can be in vermiculite and pearlite matrix breed, sunglowoutward-bound rooting rate lowest, only in vermiculite matrix cultivation; The experiment wasremained in pearlite matrix, the rooting rate is highest, cloud lock lotus peak of rooting rate is low,should choose vermiculite as substrate cultivation.Through the control of temperature on rooting rate influence of contrast test, we find out thedahlia cutting seedling root appropriate temperature for24℃-26℃, between24℃, the BaiJurooting rate reached88%, cloud lock lotus peak reached83%;26℃, skirt edge to sweep therooting rate reached88%, white butterfly and cloud lock lotus peak reached85%, for cuttingseedling root is relatively appropriate.(3) in plant height control test, the contrast of different concentrations paclobutrazol sprayingeffect; Test showed that the plant height control contrast test, the six kinds of potted dahliavarieties spray the different concentration of growth regulator paclobutrazol later, plant height arereduced, in comparison, the greater the concentration of plant height and reduce the better, sixvarieties through the spraying200times paclobutrazol solution, plant height control to the idealpotted plant height, but flowering to delay. In production practice, in order to ensure flowering,should spray500times paclobutrazol solution, skirt edge sweep the snow, white butterfly, redwaves, cloud lock lotus peak, sunglow sea have shown a good ornamental value.In flowering control test, comparing the different concentration of gibberellin point appliedeffect, experiments show that:500倍液gibberellin point applied to potted dahlia flowering ofthe most obvious effect. Among them, the skirt edge sweep the snow and cloud lock lotus peaktwo varieties flowering for five days, the most obvious effect.(4) the urumqi area found that dahlia common5diseases, insect,4main diseases for powderymildew, gray mold, flower blight, Mosaic and bacterial wilt, the main pests of rice for dahlia moth,aphids, starscream and beetle. The gray mold and starscream-the most common.