Relationship in Yield,Growth and Nutrient Storage of Zanthoxylum bungeanum Under Different Formula Fertilization in Rocky Desertification Area
[Objective]The relationships among the yield of Zanthoxylum bungeanum,the growth of shoots and roots and nutrient accumulation under formula fertilization were explored,which provided support for improving the juvenile Z.bungeanum yield and advancing the harvest time.[Method]A sample plot was set up in the artificial Z.bungeanum forest land in Sanhe Town,Bozhou District,Zunyi City,Chishui River Basin.Through setting N,P and K fertilizers as fertilization factors,and setting each factor with four fertilization levels,the effect of different fertilization treatments on shoots and roots growth of juvenile Z.bungeanum,content of non-structural carbohydrate,bud differentiation rate,percentage of fruit-bearing branch,the number of grain per spike and yield were studied.[Result]The treatment of urea 590 g/plant+calcium superphosphate 1 335 g/plant+potassium sulfate 480 g/plant+boron fertilizer 10 g/plant+organic fertilizer 10 kg/plant had the best promotion effect,which could significantly increase the bud differentiation rate,percentage of fruiting-bearing branch,the number of grains per spike,1000-grain weight,fruit setting rate and yield of Z.bungeanum.Fertilization changed the resource allocation of nutrients in growth,nutrient storage and reproduction(flowering and fruiting),and promoted the growth of shoots and roots,which was beneficial for plants to obtain nutrients and promote fruiting.The yield was significantly correlated with the number of grains per spike,which indicated that fertilization promoted flower bud differentiation and reduced flower and fruit dropping.Fertilization also promoted the accumulation of soluble sugar content in branches and roots,and then improved the stress resistance of plants.[Conclusion]Fertilization could promote nutrient accumulation,improve stress resistance(mainly to low temperature in winter),reduce flower and fruit dropping,and then increase yield of Z.bungeanum.
Zanthoxylum bungeanumyieldgrowthnutrient storagerocky desertification area
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万方数据
维普
