生草栽培对大雅柑生长及结果的影响
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中图分类号：S666.1 文献标志码：A文章编号：1673-9868（2025）05-0063-11
DOI：10.13718/j. cnki.xdzk. 2025. 05.006
Effects of Grass Cultivation on Growth and Fruit of Citrus reticulata Dayagan
YONG Shunyuan1'²， CHEN Qian1'²， FU Hao1，²，GUO Qigao1'²， ZENG Ming1
1.Colegeof HorticultureandLandscapeArchitecture，Southwest University/KeyLaboratoryofAgricultural Biosafetyand Green Production of Upper Yangtze River Ministry of Education，Chongqing ，China ;
2.Academy of Agricultural Sciences，Southwest University/State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University，Chongqing 40o715，China
Abstract： In order to investigate the effect of sod culture on Citrus reticulata Dayagan， with orchards under four treatments of sod culture with four forage species （Medicago satiua ， Vicia satiua ， Raphanus satius and Trifolium incarnatum） as research subjects，the number and weight of nodules，mycorrhizal infection rate，root vigor，soil physical and chemical properties，tree growth，fruits yield and quality were determined. The results showed： ① The mycorrhizal infection rates of grass species showed correlations with citrus root infection rate，acid phosphatase activity of citrus and citrus root vigor. ② Sod culture increased soil nutrients in the orchard. The M . sativa treatment had the best effect. It could significantly reduce the soil temperature of the orchard and increase the soil water content in summer. ③ Sod culture can promote citrus autumn shooting and leaf growth，and increase the accumulation of N， ΔP and K in citrus leaves. The order of effect on N was M . sativa，V. sativa， R . sativus， T . incarnatum. Sod culture can improve the citrus yield，single fruit weight and soluble solids. V. satiua had the best effect in two consecutive years. It is recommended to choose M. satiua and V. satiua for sod culture in‘Dayagan’ citrus orchards.
Key words： Citrus reticulata Dayagan; sod culture； mycorrhiza; soil physicochemical properties
果园生草栽培作为一种可持续农业管理模式，起源于19 世纪末的美国，伴随灌溉技术革新与机械化割草设备的普及，逐步发展为全球广泛应用的果园管理体系[1]。（剩余12243字）