论文部分内容阅读
1园地土壤条件苹果生长适于土层深厚、排水良好和富含有机质的沙质壤土。高产优质果园,土壤有机质含量应达到1%以上,活土层在60cm以上。土壤通透性不良时,根系生长易受阻。土壤pH值以微酸性到中性为宜,最适宜pH值为5.4～6.8,pH值5.4以下时,易发生缩果病及苦痘病,pH值7.8以上时,易发生缺素失绿现象。土壤的盐碱度应低于0.15%。
1 Garden soil conditions Apples grow suitable for deep soil, well-drained and organic-rich sandy loam. High-yield and high-quality orchards, soil organic matter content should reach more than 1%, living soil layer in more than 60cm. When the soil permeability is poor, the root growth is easily blocked. Soil pH value is slightly acidic to neutral is appropriate, the most appropriate pH value of 5.4 to 6.8, pH value below 5.4, prone to shrinkage disease and bitter pit disease, pH value of 7.8 or more, prone to lack of missing green phenomenon . Soil salinity should be less than 0.15%.