生草栽培对柑橘园土壤水分与有效养分及果实产量、品质的影响

试验研究生草栽培对柑橘园土壤水分和有效养分含量及果实产量品质的影响结果表明,生草栽培7～11月份干旱时期可提高果园土壤含水率;生草栽培初期降低果园土壤有效氮、磷、钙、镁、锰、铜和锌等矿质养分含量,但生草栽培2年后土壤有效氮、钾、铁和锌等矿质养分含量高于清耕对照。生草栽培可提高果实产量和果实可溶性固形物含量,降低果实柠檬酸含量,且种植百喜草比白三叶效果更明显

Influences of sod culture on the soil water content,effect of soil nutrients,fruit yield and quality in citrus orchard

The influences of sod culture on the soil water content,effect of soil nutrients,fruit yield and quality in citrus orchard were studied.The results show that the average value of soil water content in planting grass plot is increased compared with that of the clean cultivation plot between July and November.At the early stage of sod culture,the effective contents of soil N,P,Ca,Mg,Mn,Cu and Zn are decreased in sod plot.However,after 2 years sod culture,the effective contents of soil N,K,Fe and Zn in sod plot are increased significantly compared with those of the check plot.The fruit yield and the content of soluble solid state material of the fruit are increased,while the citrus acid content of the fruit is decreased in planting grass plot.The better effects are in planting bahia grass plot.