安徽农业科学2011，Vol.39Issue(21)：12732-12734,12738,4.
重茬苹果园土壤理化性质变化及对幼树生长结果的影响
Physical and Chemical Properties of Cropping Orchard Soil and Influence on Growth and Yield of Apple Saplings
摘要
Abstract
[Objective] Dwarf models and thick planting adding the improvement of soil organic fertilizer were used to reduce barriers for new planting seedlings replanted hazards. [ Method] Soil and sapling in 22 year-old orchard were used to study orchard soil nutrients, soil enzyme activity and growth of apple trees replanted and yield changes for two consecutive years. [ Result] Soil organic matter was 2 g/kg in the orchard before reset, and soil organic matter was more than 10 g/kg in 2009, but it dropped to between 5 and 9g/kg in 2010, which showed that soil organic matter was transformed. Nitrogen content was mostly in 120-150 mg/kg in the old orchards before planting, available phosphorus content reached 150 mg/kg, and available potassium content reached 80-90 mg/kg. pHof80% of the soil samples was lower than 5.5. The changes of soil nitrogen and available phosphorus werent large in 2009, while available potassium content was 470 mg/kg. pH of all soil sam ples were higher than 5.5. Soil samples nitrogen content was 100 - 120 mg/kg in 2010, available phosphorus was 30 mg/kg, and available potassium content was 200 - 300 mg/kg. pH of 80% soil samples was above 6.0. Average flowering rate reached 649.2/plant in 2010, but in 2009 it was 74.5/plant. The single weighs in 2010 was as the same as those in 2009. Most of them were around 195.5 g. Apple weighs in sin gle was 200 g, and fruit trees yield was up to 40 669.5 kg/hm in 2010. [ Conclusion] Organic matter and N, P, K content in improved soil were increased, and in the ensuing two years they decreased. Saplings grown well after planting and in 2010 they entered a stable yield period.关键词
重茬障碍/土壤理化性状/土壤改良Key words
ARD/ Soil physical and chemical properties/ Soil improvement分类
农业科技引用本文复制引用
杭波,韩青海,李庆军,原永兵,刘成连..重茬苹果园土壤理化性质变化及对幼树生长结果的影响[J].安徽农业科学,2011,39(21):12732-12734,12738,4.基金项目
山东省农业重大应用技术创新课题资助项目. （）
