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Application of Plant Growth Regulators to Quality Improvement for Masson Pine Seedling

Hu Zhesen(Forestry Department of Fujian College of Forestry,Nanping,Fujian 353061)Zhuo Shian(Xidon Forest Farm,Jianou,Fujian 353122)  
Spraying the needle surface of Masson pine (Pinus massoniana) seedling with CCC at concentratlom of 750ppm and 1000ppm.B-9 at a concentration of 1500ppm and pp333 at concentrations of 500 ppm and 750ppm,and fertilizing the soil with CCC at concentrations of 1000ppm and 1300ppm,inhibit stem elongation and promote root growh, as a result increase root/shoot ratio. These treatments also improved the metabolic activity and root vigor of the seedling by increacing the contents of chlorophyll, protein and nucleic acids.
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