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以色素辣椒‘0409’为试材,采用裂区试验设计,设置不同种植密度(82 500、67 500、52 500株·hm-2)不同行距配置(70cm+50cm、60cm+60cm、80cm+40cm),研究密度和行距配置对色素辣椒光合特性及产量的影响。结果表明:密度和行距配置均显著影响色素辣椒产量。随着种植密度的增加,叶面积指数和群体干物质积累均增加,而功能叶的光合速率(Pn)、气孔导度(Gs)和蒸腾速率(Tr)逐渐减小,青果数和落果率增加,单株商品果数减少,但是较高的有效公顷株数足以弥补它的劣势,所以密度为82 500株·hm-2时产量最高,平均为7 201.40kg·hm-2;同一密度下不同行距配置时大小行种植比等行距更有利于获得高产,在3个密度下80cm+40cm行距配置的叶面积指数、群体干物质积累、功能叶的Pn、Gs和Tr以及单株商品果数均高于其它2个行距配置,产量为最高。因此,82 500株·hm-2种植密度、80cm+40cm行距配置为色素辣椒最佳栽培方式,群体增产潜力最大。
Taking chili pepper ’0409’ as test material, different planting density (82 500, 67 500, 52 500 plants · hm-2) with different row spacing (70cm + 50cm, 60cm + 60cm, 80cm + 40cm ) To study the effects of density and spacing on the photosynthetic characteristics and yield of pigment capsicum. The results showed that both density and row spacing significantly affected the yield of pigment capsicum. With the increase of plant density, leaf area index and population dry matter accumulation increased, but the photosynthetic rate (Pn), stomatal conductance (Gs) and transpiration rate (Tr) of functional leaves decreased gradually, and the number of fruit and fruit drop increased , The number of fruit per plant decreased, but the higher number of effective hectares was sufficient to make up for its disadvantage. Therefore, the highest yield was 82.20 plants · hm-2 with an average of 7-201.40 kg · hm-2. When arranging, the row and row size was more conducive to high yield than row spacing. Leaf area index, population dry matter accumulation, Pn, Gs and Tr of functional leaves and the number of fruit per plant were all high at three densities of 80cm + 40cm In the other two line spacing configuration, the highest output. Therefore, 82 500 plants · hm-2 planting density, 80cm + 40cm row arrangement for the best cultivation methods of pigment capsicum, the largest group yield potential.