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柑桔是常绿果树,周年生长,挂果期长,需要肥料多。肥料要以有机质肥为主,化肥为辅。利用幼年柑园间种绿肥,是贯彻自力更生方针,以园养园,解决有机质肥料的好方法。二十多年来,我场柑园间种过的绿肥种类有一、二十种,在长期的生产实践中选出比较适合山地柑园间种的绿肥印度豇豆。印度豇豆匍匐性,蔓长四、五米,长的达六米以上。根群发达,幼根根瘤多,耐瘠、耐旱性强,对土壤要求不严,粗生快长,在新开垦的柑园它能较好生长,能很好地覆盖土面。
Citrus is an evergreen fruit tree, annual growth, fruiting long, need more fertilizer. Fertilizer should be based on organic fertilizer, supplemented by fertilizer. The use of young orange garden between the green manure is to carry out the principle of self-reliance, to park garden, a good way to solve the organic fertilizer. In the past two decades, there have been one or twenty kinds of green manure planted in our citrus orchard, and green manure Indian cowpea, which is more suitable for intercropping in mountainous citrus groves, has been selected in long-term production practice. Indian cowpeas creeping, vine length four or five meters long up to six meters or more. Roots developed, more root nodules, barren, drought-resistant, lax requirements of the soil, thick and fast growing, in the newly reclaimed citrus garden it can grow well, can well cover the soil surface.