山地桔园1～3年生幼龄柑桔,枝叶稀,树冠小,园中留有大量空白地,夏秋两季,青草繁生,对这些青草,传统做法是勤耕清除。现越来越多的实践证明,在土壤熟化度低,土质瘠瘦,绿肥又跟不上的情况下,山地幼龄桔园每年夏秋蓄草(树冠垂直投影范围内不蓄草),是维持桔园生态平衡的经济而有效的措施。 一、可减轻桔园土壤冲刷5～6月份,许多地方雨水集中,雨量大,而山地桔园通常有一定的坡度,如果无植被覆盖,将产生严重地表径流。据报道,每亩用300公斤麦秆覆盖,可减少97％地表径流。桔园蓄草,在此期间由于覆盖度较大,水土流失量只有75 Orange garden 1 to 3 years old young citrus, leaves thin, small crown, leaving a lot of space in the garden, the summer and autumn, grass and life, for these grass, the traditional practice is to cultivate clear. More and more practice has proved that in the case of low soil maturity, poor soil quality, and green manure can not keep up, the annual juvenile orange orchards in the mountain area are planted in summer and fall (the canopy is not planted in the vertical projection range of the canopy) The ecological balance of the orange orchards is an economical and effective measure. First, to reduce orange soil erosion May to June, in many parts of the rainwater concentration, rainfall, and mountain orange orchard usually have a certain slope, if no vegetation cover, will have a serious surface runoff. It is reported that covering 300 kg of wheat straw per mu can reduce surface runoff by 97%. Orange garden, in the meantime due to the larger coverage, soil erosion amount is only 75