椰园/牧草间作:牧草的适应性研究

Adaptability of Grasses Intercropped in Coconut Plantations

进行了15种热带牧草在椰园间作的适应性试验,调查了它们的产量情况和生产参数并作统计分析.结果表明:在幼龄椰园内,间作豆科牧草和禾本科牧草,均可获得较高的经济产量;在光照强度大于30%的成龄椰园内,可间作多数禾本科牧草,并能获得一定的经济产量,但不宜间作豆科牧草;在光照强度低于30%的成龄椰园内,不宜于绝大多数牧草间作.间作于幼龄椰园的牧草产值可达1.0～3.0万元/hm2;间作于成龄椰园的禾本科牧草产值可达0.5～2.0万元/hm2.

An experiment was conducted to study the survival rate, growth, flowering and yield of 15 species varieties of tropical grasses intercropped in young & mature coconut plantations. The results showed that both gramineous and leguminous grasses were suitable for intercropping in young plantations with a good harvest. Most of gramineous grasses produced a reasonable income when intercropped in mature coconut plantations under the relative light intensity of over 30 %, but the legumes failed to produce any income. However, most grasses did not grow well in the coconut plantations when the relative light intensity was under 30 %. Generally, grasses intercropped in coconut plantations produced an income of RMB 10,000-30,000 yuan/hm2 in young coconut plantations and RMB 5,000-20,000 yuan/hm2 in mature plantations when suitable grasses were intercropped.