摘要
为了探明四川省金花梨果园土壤的营养状况,为制定科学合理的配方施肥方案提供一定的依据,以汉源县21个金花梨果园土壤为试材,测定其养分含量。研究结果表明：所调查果园土壤的pH值85%小于7.5,普遍缺乏有机质,平均含量仅为1.28%。有机质对大多数有效养分有增效作用。土壤有机质含量为0.3%-1%的果园,需每a每hm^2施用有机质75000-250000 kg,连施3 a将有机质含量提高到2%,才能保证金花梨优质丰产。每生产100 kg金花梨果实需要每a施用纯氮0.60 kg,纯磷0.33 kg,纯钾0.56 kg,即N、P、K施用质量比为2∶1∶2。果园之间各种土壤养分含量的变异系数均在10%以上。
In order to research nutrition situation of soil in Pyrus pyrifolia Nak.cv.′Jinhua′ orchard and provide a basis for making scientific and rational fertilization plans,nutrient contents in soil were determined,taking soil in P.pyrifolia Nak.cv.′Jinhua′ orchard as materials.The results showed that pH value of 85% soil in orchards was lower than 7.5,soil in orchard is generally lack of organic matters,and average content of organic matters was just only 1.28%.Organic matters have synergetic action on most available nutrients.In order to obtain high quality and yield,it was need to fertilize organic matters 75 000-250 000 kg·hm-2 per year,and content of organic matters could be increased to 2% after 3 years.Yielding 100 kg fruits need pure N 0.60 kg,pure P 0.33 kg,pure K 0.56 kg per year,and mass ratio of N,P,K was 2∶1∶2.All variation coefficients of nutrient contents in soil were over 10%.
出处
《经济林研究》
2008年第3期53-58,共6页
Non-wood Forest Research
关键词
经济林学
金花梨
果园土壤
营养诊断
nonwood forest science, Pyrus pyrifolia Nak.cv.′Jinhua′, soil in orchard, nutrition diagnosis, fertilization
作者简介
魏雪梅（1980-），女，四川成都人。助教，硕士研究生，主要从事园艺作物栽培技术及理论方面的研究。
通讯作者：廖明安（1962-），男，四川雅安人。教授，博士生导师，主要从事园艺作物优质高产高效理论及技术方面的研究。
