Effects Of Fertilization Management And Ridging Methods On Vegetable Growth And Nutrient Utilization Rate In Chinese Solar Greenhouse

This experiment is mainly divided into two parts:(1)to study the effect of agricultural planting mode on nitrogen and Phosphorus leaching resistance;(2)to study the effect of different fertilization amount and fertilizer combination on nitrogen and Phosphorus leaching resistance.Finally,the comprehensive evaluation of the environmental effect and economic benefit is carried out to select the better agronomic measures and the amount of fertilizer application.The economic benefits are mainly reflected in the yield and quality of vegetables,the utilization efficiency of fertilizer,the ratio of production to investment and so on.The specific conclusions are as follows:1 The results showed that N1 treatment group(organic fertilizer 4000 kg / mu + chemical fertilizer 15 kg / mu)had the best control effect on nitrate nitrogen,ammonia nitrogen,soluble total nitrogen and total nitrogen in leaching solution.Compared with traditional FP treatment(organic fertilizer 4000 kg / mu + chemical fertilizer 20 kg / mu),the reduction rate reached 73%,80%,63% and 65%.FP traditional treatment(organic fertilizer 4000 kg / mu + chemical fertilizer20 kg / mu)had the best control effect on total phosphorus and soluble total phosphorus in leaching solution.2.The yield and economic benefits of N1 treatment group(organic fertilizer 4000 kg / mu +chemical fertilizer 15 kg / mu)were significantly higher than the other four treatment groups.Compared with FP traditional treatment(organic fertilizer 4000 kg / mu + chemical fertilizer 20kg/ mu),the yield and economic benefit increased by 30% and 33% respectively.3.In terms of fruit quality,the nitrate content of pepper fruit in FP traditional treatment(organic fertilizer 4000 kg / mu + chemical fertilizer 20 kg / mu)and N4 treatment group(organic fertilizer1200 kg / mu + chemical fertilizer 7.5kg/mu + 860 kg / mu activated carbon)was the lowest;the VC content of pepper fruit was the highest in n4 treatment group(organic fertilizer 1200 kg / mu +chemical fertilizer 7.5kg/mu + 860 kg / mu activated carbon)There was no significant difference in solid content.4.For the content of nitrate nitrogen and ammonium nitrogen in the drip irrigation solution of high border drip irrigation + film mulching(HD + M)was 13% more effective than that of high border drip irrigation(HD),and the inhibition effect of high border drip irrigation + film mulching(HD + M)was significantly reduced by 45% compared with that of flat border drip irrigation +film mulching(FD + M).In terms of the effects of comprehensive agricultural operation mode on nitrate nitrogen and ammonia nitrogen in leaching solution,the high border drip irrigation + film mulching(HD + M)treatment group had the best control effect on nitrate nitrogen and ammonia nitrogen leaching.5.The nitrogen uptake of high ridge drip irrigation(HD)group reached 14.28g/kg,the nitrogen uptake of high ridge drip irrigation(HD)group was significantly increased by 14% than that offlat border drip irrigation(FD),the nitrogen utilization rate of high ridge drip irrigation(HD)group and flat border drip irrigation(FD)treatment group was significantly different,and the nitrogen utilization efficiency was significantly increased by 12.5% High ridge drip irrigation(HD)treatment had the highest uptake and utilization of nitrogen and phosphorus in celery.6.There was no significant difference in celery quality among the treatments,indicating that different ridging and film mulching had little effect on celery quality;the celery quality of HD +M treatment group was slightly higher than the other three treatment groups,but the difference was not significant.7.In terms of yield,the yield of high ridge drip irrigation + film mulching(HD + M)group was the highest,and the celery yield of HD + M treatment was 41% higher than that of high ridge drip irrigation(HD)treatment,which indicated that under the condition of high ridge ridging,the yield of celery covered with plastic film was significantly higher than that without film mulching;the celery yield of high ridge drip irrigation(HD)treatment was 5.79% higher than that of flat border drip irrigation(FD)In addition,the yield of celery in high ridge cultivation was slightly higher than that in flat border cultivation.8.N1(organic fertilizer 4000 kg / mu + chemical fertilizer 15 kg / mu)is recommended for pepper production,and high border drip irrigation + film mulching(HD + M)is recommended for celery production.