摘要
根据柑桔树体对土壤生态环境和营养元素的季节性需求变化特点,综合考虑各营养元素间的平衡、有机养分与无机养分之间的协调、土壤生物和土壤物理性状的改善,提出不同因子组合处理,进行了3年定位试验。结果表明:新型生态施肥技术,对桔园土壤生态环境和柑桔产量、品质有明显的效果,有效地提高了土壤有机质、全N、P、K和速效N、P、K含量,以速效P增幅最大,三年增26.92%~40.0%;除能提高所施用微量元素含量水平外,还提高土壤有效态Fe、Cu含量水平;土壤容重三年降低了0.04g cm^-3~0.10g cm^-3,总孔隙度增加10.4%~16.8%,通气孔隙增加19.9%~30.1%,全容水量增加7.0%~12.1%;有效地改善了柑桔的品质,增加了果实的单果重、可溶性固形物含量、可溶性糖含量以及Vc含量。
A three - year experiment was carried out to investigate the effect of new ecological - fertilization techniques on soil ecological environment and citrus yield and quality. The results showed that the new ecological - fertilization techniques had an obvious influence on improving soil ecological environment, and citrus quality and yield. The contents of soil total N,P and K and available N, P and K increased and in particular, the content of soil available P increased from 26.92 to 40.0%. In addition, the total porosity, aeration porosity and water - holding capacity increased by 10.4% - 16.8%, 19.9% - 30.1% and 7.0% - 12.1% respectively, but soil bulk density decreased by 0.04 - 0. 10g/cm^3. The new techniques could also improve the quality and weight of fruits, and the content of soluble solid, soluble sugar and Vc greatly.
出处
《土壤通报》
CAS
CSCD
北大核心
2006年第6期1137-1141,共5页
Chinese Journal of Soil Science
基金
国家"十五"科技攻关项目(2001-BA-508-B03)资助
关键词
生态施肥
土壤环境
柑桔
产量
品质
Ecological fertilization
Soil environment
Citrus
Yield and Quality