Effects Of Different Modes Of Reducing Fertilizer On The Growth And Fructification Of Fuji Apple Trees

In recent years,the rapid development of the apple industry in the Weibei area of Shaanxi Province has led to the blind application of chemical fertilizers for apple production,which has led to an increase in the amount of chemical fertilizers,which has led to imbalances in soil nutrients,environmental pollution,fruit quality and economic benefits.In this experiment,three different weight loss models were designed for the excessive application of chemical fertilizers in apple production in Weibei,Shaanxi Province.They were traditional mode,double reduction mode,and X mode.Through different modes of soil nutrient,tree growth,fruit quality,Research on yield and economic benefits to explore the best mode of reducing fertilizer application,and provide theoretical basis for the scientific reduction of chemical fertilizer in Weibei area of Shaanxi.The main test results show that:1 With the increase of soil water content,the X model is applied with N 0.95 kg/plant,P₂O₅ 0.77 kg/plant,K₂O 1.3 kg/plant,and organic fertilizer 3.0 kg/plant with the highest soil water content.The soil organic matter content is increased by reducing the application of chemical fertilizers.In X mode,the pH decreases after the application of organic fertilizer.In the traditional model,N 1.73kg/s,P₂O₅ 1.24kg/s,K₂O 1.15kg/soil had the highest total nitrogen content and nitrate nitrogen content.The X model reduced the total nitrogen content of the fertilizer by 26%compared with the traditional model.The nitrogen content decreased and the standard indicators were in the normal range.The X mode compares the effective phosphorus with the traditional mode and the double reduction mode,and the available potassium content increases as a whole,and the comparison standard index is in the normal range as a whole.2 Double reduction mode Annual application of N 1.02 kg/plant,P₂O₅ 0.75 kg/strain,K₂O 1.4 kg/strain Compared with traditional model,there is no significant difference in tree growth after 23%reduction of fertilizer,but the leaf chlorophyll content is higher than the traditional model.The X mode has an increased leaf mass and tree growth compared to the traditional model.The chlorophyll content increases.Compared with the traditional model,the X mode decreased the total nitrogen,total phosphorus and total potassium of the leaves after the application of 26%fertilizer,and the standard index was in the normal range.3 Traditional mode,double reduction mode,X mode three weight loss mode contrast,with the reduction of fertilizer can titrate acid content,X mode titratable acid content is the lowest.In the X mode,with the increase of organic fertilizer,the fruit firmness,soluble solids and single fruit weight increased.The traditional model has the largest output and the lowest commodity rate.The X mode has the highest number of fruits,the best commodity rate and the highest economic benefit.4 The traditional model fertilizer partial productivity is higher than the double reduction mode,and the fertilizer utilization rate is lower than the double reduction mode.The X-mode fertilizer partial productivity is higher than the double-reduction mode and the traditional mode,and the fertilizer utilization rate is higher than the double-decrement mode and the traditional mode.5 In summary,after reducing the application of chemical fertilizer,under the condition of ensuring normal growth of apple,the soil nutrient content is reduced,but the standard content is in the normal range,the fruit tree grows well,the fruit quality rises,and the economic benefit of fertilizer utilization increases,which is in line with the state's vigorous promotion of reducing fertilizer application.Effective goal.Therefore,it is more suitable for the reduction of fertilizer application scheme in the northern part of Fujian Province.The annual application rate of X-type fertilizer is N 0.95 kg/plant,P₂O₅ 0.77 kg/plant,K₂O1.3 kg/plant,and organic fertilizer 3.0 kg/plant.