摘要
通过对红壤丘陵区柑桔土壤采用不同覆盖物的大田试验,探讨了地面覆盖后土壤水分,温度、养分等肥力因素的变化,以及覆盖对柑桔产量和品质的影响,结果表明,地面覆盖是克服红壤障碍因素,改善土壤水热条件,防止夏秋高温干旱的重要技术措施,4种覆盖物都能显著提高柑桔产量,其中活体绿肥效果最佳,增产28.6%;麦秆、木渣次之、增产18.6%和17.9%;杂草效果稍差,只增产6.4%,覆盖能改善果实品质,各处理比对照(裸露)果实含酸量小,糖酸比和维生素C含量高,且差异显著。
Plot experiments show that soil covering of organical manu-re is an important technical measure for overcoming Red Soil's obstructingfactors. All the four tested covers raise yield and improve fruit quality signi-ficantly. In yield-increasing effect, living green manure ranks first, with28.6% of yield increase, then come straw and wood residual, 18.6% and17.9%, respectively,and weeds come last, with only 6.4% of increase. Fruitsin all treatments have smaller acid content, higher retio of sugar to acid, andhigher vitamin C content than those in control.
关键词
红壤
覆盖
柑桔类果树
krasnozem
mulch
citrus-reticulata trees
