The Effects On Fruit Vegetables Growth And The Soil Environment With Replacement Of Organic Fertilizer And Fertilizer Application In Solar Greenhouse

In recent years,China’s facility vegetable cultivation has developed rapidly in agricultural production.However,there are widespread problems in the production of vegetable facilities such as the use of organic fertilizers,excessive chemical fertilizers,low fertilizer utilization,and deterioration of soil physical and chemical properties,which affects the sustainable production of vegetables.This experiment used cow dung instead of chicken manure and chemical fertilizers to reduce the amount of applied fertilizer to study the effects of different fertilizer treatments on the growth and development of cucumbers,tomatoes and soil environment in solar greenhouses,and to explore the technology of reducing fertilizer application for the production of fruits and vegetables in facilities,and to improve the quality and efficiency of facilities vegetables.Provide scientific basis.The test results in the following:1.Cow manure replacement chicken manure and chemical fertilizer reduction application have certain effects on plant growth,root activity,chlorophyll content and quality.Cucumber T3 treatment(3compound fertilizer nitrogen reduction 15% + cow manure,water soluble fertilizer topdressing),root activity increased by 17.78% ~ 61.53% than the control(conventional chemical fertilizer application50kg/667m2 + chicken manure),chlorophyll content increased by 11.04 %~15.56%,the yield increased by 9.98% compared to the control;the content of vitamin C and protein increased by 22.66% and 50.31%respectively compared with the control.Tomato 3 treatment(3 compound fertilizer nitrogen reduction15% + cow manure,humic acid topdressing)can significantly increase root activity and yield,respectively 31.9%~ 93.1% higher than the control(conventional chemical fertilizer application50kg/667m2 + chicken manure)And 11%.Soluble sugar,vitamin C content and protein content of tomato increased by 12.55%,27.28% and 25.40% compared with the control,respectively.2.The replacement of chicken manure and chemical fertilizer with cow dung had significant effects on the microbial population and soil enzyme activity in rhizosphere soil.The amount of bacteria and actinomycetes in the rhizosphere soil increased and the number of fungi decreased in the treatment of cucumber T3(3 compound fertilizer nitrogen reduction 15% + cow manure,water-soluble fertilizer topdressing).The amount of bacteria in the rhizosphere soil increased by 3.5% to 6.21% compared with the control,the number of actinomycetes increased by 35% to 38.75%,the number of fungi decreased by38.79% ~ 45.62% compared with the control,and the urease activity increased by 27.45%~ 64.78%compared to the control.The catalase activity increased by 7.31% ~ 24.39% compared to the control.Tomato 3 treatment(3 compound fertilizer nitrogen reduction 15% + cow manure,humic acid topdressing)bacterial population increased by 15.6% ~ 33.33% compared to the control,the number of actinomycetes up to 8.03 × 106 cfu · g-1,the number of fungi decreased 6.67 % ~ 48.70%.Tomato 3treatment of hydrogen peroxide enzyme activity increased by 13.1% ~ 23.4%.3.The soil nutrient content and fertility status of cow manure replacing chicken manure and fertilizer reduction application were improved.Cucumber T3 treatment(3D compound fertilizer nitrogen reduction15% + cow manure,water soluble fertilizer topdressing),soil nitrogen content in 20 cm plough layer increased by 6.23%,potassium content increased by 48.71%,soil volume weight decreased by 3.57%Soil porosity increased by 4.68% compared to the control,EC was 0.67 m S/cm(ec soil EC range 0.4 to 1);tomato 3 treatment(3D compound fertilizer nitrogen reduction 15%+ cow manure,humic acid fertilizer)20 The content of soil organic matter in cm plough layer was increased by 18.81% compared with the control.The content of N,P and K in the 20 cm plough layer was increased by 17.64%,15.54% and32.20% compared with the control,the soil bulk density was decreased by 12.13% compared with the control,and the soil porosity increased by 17.14% compared with the control.EC is 0.51 m S/cm.