Study On Application Of Organic Fertilizer To Shatian Pomelo In Rongxian County

Based on the investigation and study and experimental study on the method of combining with in-depth research from Rong county to pomelo soil available nutrients,fruit quality,production of organic fertilizer application status,problems and for the foundation,to carry out the four kinds of commonly used local organic soil available nutrients and fruit quality of pomelo leaves,comparison test,the influence of screening the best comprehensive effect fertilizer varieties,To improve the soil environment,improve the quality of fruit,drive the purpose of efficiency.At the same time,practical and feasible countermeasures were put forward for the problems exposed in the application and promotion of organic fertilizer in the production of Shatian pomelo in Rongxian County,so as to provide reference for the high-quality and efficient cultivation of Shatian pomelo and the sustainable development of the industry.The main results are as follows:1.In 2018,The planting area of Shatian pomelo in Rongxian County reached 210,000 mu,accounting for 90% of the whole fruit planting area in the county,with an output value of more than 1.8 billion yuan.In order to promote the application of organic fertilizer,the county government carried out work in three aspects: standard formulation,technology popularization and facility construction.In 2019,132,000 tons of organic fertilizer and 21,600 tons of chemical fertilizer were applied.Organic fertilizer to use chicken manure,peanut bran fertilizer,soybean fertilizer and biological organic fertilizer.2.Compared with the soil quality of 2011,phosphorus,potassium and boron elements in the main producing area of Shatian Pomelo in Rongxian County decreased significantly in2012.Compared with the soil quality of Qianqiu Village in Rongxian County in 2016 and2013,the soil quality is lack of a large number of elements,balance of medium and trace elements,decrease of organic matter content and acidification of soil.From 2014 to 2018,fruit quality performance was unstable,single fruit weight decreased year by year,vitamin C and soluble solids content fluctuated greatly,and the appearance quality and sensory quality in 2020 were worse than that in 2019.3.Through field visit and questionnaire survey,the problems affecting the application and promotion of organic fertilizer in Shatian pomelo production in Rongxian County are as follows: it is difficult to change the traditional application habits of agricultural operators,and the cognition of organic fertilizer is insufficient;The production and production conditions of organic fertilizer are poor and the technology is backward.Government support policies and Fintech services are insufficient;Organic fertilizer industry structure is poor,market chaos;Production and distribution of the main body of the lack of after-sales service,product quality is uneven.4.For the soil depth of 0～20cm,The sequence should be shrimp peptide fertilizer>soybean fertilizer>peanut bran fertilizer>chicken manure fertilizer.For the soil depth of 20～40cm,The sequence should be soybean fertilizer>peanut bran fertilizer>shrimp peptide fertilizer>chicken manure fertilizer.The nutrient element accumulation ability of leaves was ranked as follows:peanut bran fertilizer>soybean fertilizer>shrimp peptide fertilizer> chicken manure fertilizer.Shatian pomelo treated with peanut bran fertilizer applied had the highest soluble solid content which was 14.88%,and the fruit flavor was the best.Shatian pomelo treated with soybean fertilizer had the highest vitamin C content which was 128.57 mg/100 g,and had the best storability and the highest juice rate.Shatian pomelo treated with chicken manure fertilizer had the highest edible rate.The economic benefit of shrimp peptide fertilizer application was the highest,reaching RMB12218/mu.In conclusion,organic fertilizer can effectively improve soil available nutrient content,improve nutrient accumulation capacity of leaf,improve fruit quality and improve economic and ecological benefit.The four types of fertilizers can be ordered,in terms of comprehensive effects,in the following sequence of peanut bran fertilizer,soybean fertilizer,shrimp peptide fertilizer and chicken manure fertilizer.In view of the existing problems in the application and promotion of organic fertilizer in Shatian pomelo production in Rongxian County,the countermeasures are put forward,such as strengthening organization and leadership,strengthening science and technology and financial services,increasing capital investment and facility construction,increasing publicity and training,strengthening market supervision and management and improving land use laws and regulations.