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为了筛选适宜京郊果园种植的绿肥品种,进行了以豆科、禾本科为主的13个品种的春播和秋播田间试验。通过观测出苗情况、抗杂草能力、生育时期、田间长势、生物量、植株养分等指标,认为禾本科多年生黑麦草、豆科白三叶草、毛叶苕子这3个品种最适合秋季种植,其具有耐寒、耐旱、耐阴、耐践踏、须根系、抗杂草、多年生、景观好等诸多优点,可作为京郊果园首选绿肥品种。菊苣、箭舌豌豆、墨西哥玉米可作为春播绿肥品种,它们抗杂草能力强,生长速度快,可及时翻压肥田。
In order to screen the green manure suitable for planting in the orchards in the suburbs of Beijing, field trials of spring sowing and autumn sowing were conducted on 13 varieties mainly of legumes and grasses. By observing the emergent situation, weed resistance, growth period, field growth, biomass, plant nutrients and other indicators, that three grasses perennial ryegrass, leguminous white clover, mulberry leaves are the three most suitable for autumn planting, which has hardy , Drought-tolerant, shade-tolerant, trample-resistant, fibrous root system, weed resistance, perennial, landscape and many other advantages, can be used as the preferred green manure varieties in orchard in Beijing. Chicory, arrow tongue pea, Mexican corn can be used as spring sowing green manure varieties, they are resistant to weeds and strong, fast growth, turning fertilizers in time.