Photinia application experience in Suzhou
Photinia its bright red new shoots and leaves its name, its bright red leaves lasting, and has repeatedly branching germination ability to get attention in the garden. In order to prove that large-scale afforestation projects Photinia application prospects, the Company used in the Taicang city greening projects, Riverside Avenue, the practice of large-scale planting Photinia this opportunity, and Photinia adaptability in the Suzhou area did observe the growth of test are briefly as follows.
Species selection
Given the current market volume and seedling sources planted in the nursery in the preliminary test results, the second in Taicang City, Riverside Boulevard greening projects in the introduced species are the "Red Robin" and "Rubens." "Red Robin" serrated leaf margin significantly higher than other varieties, leaves large, thick cuticle, leaf surface brightness. Bred in New Zealand in 1971, first introduced in China in 1998. "Rubens" leaves smaller, usually about 9cm, leaf cuticle thin, light intensity is less than the "Red Robin."
Growth Survey
Survival of 5 months, 10 months to December 2nd batch of the 300,000 planted two varieties of Photinia plant nutrition bowl and to transplant seedlings (80 000) for investigation. The first sampling four groups, each 250 The survival rate up to 97%; the second batch of 20 groups sampled, sampling number 60000, the survival rate of 99%.
Growth potential of 2 to 3 spring shoot growth amounted to 30 to 40 centimeters; fall tree growth reached 15-20 cm, the spring can have 2 to 3 times branching capability. Annual growth of up to 40-60 cm, light enough land under the red than the shading of a long 15 to 20 days, growth and more out of 5-8 cm. "Red Robin" annual growth amounted to 60 to 70 cm, "Rubens" annual growth amounted to 45 to 60 cm.
High temperature, cold month of capacity in 2004 7,8 2005 1,2-temperature climate and the cold weather months, its duration and extreme low temperature, high temperature values are much higher than in previous years, all transplanted seedlings were normal. Does not cover the same effect of winter cover. Introduced two varieties showed higher cold resistance.
Waterlogging Resistance transplanted to the Director of the river due to the water table high (about 1.5m or so), 1,2 months in 2005 due to more rain and snow, a small nursery stock digging the ditch a bad lot of death occurs. Description Photinia waterlogging is poor.
Introduction of normal increased the soil PH value 6.5 to 7.0, but the spring and summer, as is at the mouth at high tide, sea water intrusion Yangtze River estuary to river and groundwater salinity increases, soil PH value of up to 7 to 7.5 or above Some hi acid, such as cedar seedlings, camellias, smiling, azalea, gardenia yellow flowers appear the phenomenon, while the growth of introduced Photinia is still normal.
Landscape effects
And at the same time planting the rhododendron ribbon than Photinia red and long, leaves spring from late February to late May, the fall from October until the winter; summer high temperature season, sprout germination decreased, old leaves become dark green . The month in which 3,4, 10,11 months more red shoots and young leaves of bright, dazzling.
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