玉米/辣椒间作群体对光能利用的研究

以玉米辣椒单作为对照,研究了东北地区玉米/辣椒间作不同间作方式和氮肥水平下群体的光能利用。结果表明:在群体形成期,3种间作方式行间透光率都有增加,其中2:5间作底部的透光率较小,表明辣椒活动层对光的截获率较高,提高了群体对光的利用程度;间作玉米植株中部与底部的透光率明显高于单作;间作玉米叶面积主要分布在80～200cm高度的空间内,占总叶面积的71.3%,此时辣椒叶层主要分布在30～60cm的空间内,占总叶面积的80.2%。二者占据不同的空间,配置"层次化",为光的透射创造条件。

Studies on Lights Utilization of Intercropping Maize with Hot Pepper

with the single planting of maize and hot pepper as CK, the lights utilization in three different intercropping methods and nitrate nutrition in north-earth china were studied. The results showed that as the intercropping system format, the diaphanous rate of three intercropping patterns were all increased, especially 2：5 patterns the base diaphanous rate of plant was small, indicated that the active layer of hot pepper had large light intercept numbers and increased the lights utilization; the diaphanous rate of middle and base in maize intercropping obviously higher than separating; the maize leaf area mainly distribute in 80-200 cm, occupied 71.3% of the total leaf area and the pepper mainly distribute in 30-60 cm, occupied 80.2% of the total leaf area, made the field disposition ＂hiberarchy＂ and created the good condition of the light transmission.