Effect and Cost of Rainproof for Fruit Trees in Rainy Mountainous Areas of South China
[Objective]In response to the serious impact on yield and quality caused by excessive rainfall in spring and summer in high-alti-tude mountainous areas of South China,which leads to flower retting,fruit cracking,and fruit drop,different rainproof technology experiments were designed to compare the effectiveness,input,and output of rainproof treatments.[Method]With open field cultivation as the control group,and steel frame shed,bamboo and wood shed,and shading shed+(tree tray drainage,tree tray drainage+plastic film covering,flat ridge plastic film covering,and high ridge plastic film covering) for a total of 6 rain shelter cultivation treatments were set up.The survival rate and growth rate,yield,fruit cracking rate,fruit drop rate,and commodity fruit rate were observed,as well as the input-output ratio of each rain shelter cultivation were analyzed.[Result]The survival rate and growth of new plantings that sheltered from the rain were significantly higher than those of the control;the steel frame shed and bamboo wood shed had high yield and no cracking of fruits,with less fruit falling.The tree disk drainage board+mulch film treat and high ridge mulch film treatment had higher yield and less cracking of fruits;the initial investment of steel frame shed was the largest,the annual investment was the smallest,the output was the largest,and the profit was the highest.The ini-tial investment of bamboo and wood shed was small,the annual investment was the largest,the output was large,and the profit was high.The initial investment and annual investment of tree disk drainage board+mulch film were small,the output was large,and the profit was high.[Conclusion]For those with strong investment ability,it is recommended to build a steel frame rain shelter;there are sufficient bamboo and wood resources,and it is recommended to build bamboo and wood sheds.For those with limited investment capacity,temporary rain shelters with shading nets can be built,combined with tree disk drainage board+mulch film.For newly planted fruit seedlings,measures such as wate-ring,tree disc mulching,or watering+mulching can be taken to improve the survival rate of planting.
South China mountainous areasRainproof technologyEffects of rainproofCosts of rainproof
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