【摘要】 我省果园空地野草资源丰富,具有生长季节性优势。1982～1985年的调查表明:七个县区可供压青的野草面积达234.4万亩,年产鲜草353.3万吨。7～8月份产草量最高,养分集中,茎/叶值为0.85～1.30,C/N值为19～26,N达0.79～2.35％,是刈草的最佳季节。压1吨鲜草,相当施用173公斤化肥。因此开发利用果园空地野草资源,是改善果园土壤肥力,提高果树生产力的经济有效措施。更多还原

【Abstract】 Representative soils and ground cover were investigated at selected sites in 4 municipalities and 7 counties in Liaoning Province from 1982 to 1985, The growth characteristics, product components construction and nutrient content of the weeds within and outside the orchards and their patterns of change were revealed. In Liaoning Province, there are at least 3, 530, 000 tons of weed produc- tion each year; the peak growth stage is in July and August when it is the proper time for harvesting that provides maximum profit. At this stage the weed yield can be as much as 2. 75～4. 25 kg/m~2, stem/leaf ratio 0. 85 ～1. 30, C/N ratio 19～26, whole N 0. 79～2. 35%, To bury 1 ton of fresh weed into the orchard is equal to applying 173kg of fertilizers. Therefore, using weeds as green manure in orchards has a good prospect.更多还原