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Salix integra widely cultivated along the Huang-Huai region , is the main material of the willow . Salix integra times , and the bud of the bud -generation operating method , yield and quality of the production of wicker uneven . System budding generation on the yield and quality of wicker , can provide a basis for optimizing the mode of cultivation of Salix plantations . Preliminary findings through research, the bud the generation of growth and wicker quality significantly influence the main conclusions are as follows : (1) between different bud -generation times relative chlorophyll content , maximum quantum yield , the photochemical quenching the trend is obvious , but effective the quantum yield with the generation of a downward trend , apparent electron transport rate of the second generation than the first generation increased , then decreased with the increase in the generation . ( 2) different bud sprouting passages evenly diameter , high bar , biomass per unit area sprouting number of significant differences . Which the value of the growth index of the first generation of the smallest 2,3,4 generation increased , and dropped to 6th generation . ( 3 ) budding generation of leaf area index . 4th generation leaf area index , 6th generation down . Leaf area index is negatively correlated with the optical porosity . ( 4 ) the output of the wicker 4th generation , 6th generation down 1-4 generations tended to increase . Medium and small grading differences between generations 2-4 , but the highest percentage of small and medium-sized bar of the first generation . ( 5 ) wicker taper between generations times the difference was not significant , but uniformity differences , the first generation of the most neat , the 3rd generation of the most irregular . Secondary branches sprouting characteristics of relatively large difference between the first generation of the branching ratio , and the location of the lowest branches , 6th generation produce the highest position of secondary branches , and the proportion of the least . ( 6 ) the same as the thickness of the wicker toughness of the best 4th generation , 6th generation declined . Toughness and density negatively correlated .
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