生态施肥技术对桔园土壤生态环境和柑桔产量及品质的影响

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0.04 g cm-3~0.10 g 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。

Effect of New Ecological -fertilization Techniques on Soil Ecological Environment and Citrus Yield and Quality

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 V_C greatly.