密度,施肥量和灌水量对甜椒生育及产量的影响

采用3因子2次通用旋转组合设计,并应用计算机分析,研究了密度、肥料和水分3个因子对甜椒个体生长发育、群体结构的发展以及对产量形成的影响过程:探讨了因子的理论最佳组合。结果表明,在试验条件下,对甜椒生育和产量形成影响较大的因子是密度和肥料,另外还存在着交互作用,水、肥的交互作用尤为突出;产量构成中,以密度及单株果数对产量影响较大。

The Effects of Planting Density, Fertilizer and Water on Growth, Development and Yield Formation of Sweet Pepper(Capsicum annuum L.)

By means of quadratic rotational combination design, a three-factor experiment was conducted in a plastic greennouse on the plot of Hort. Dept., Shenyang Agricultural University, from Feb. to Aug. 1987. With the aid of computer, several quadratic regression models demonstrafing the relationship between target characteristics and three factors under study were established. All these models were highly significant and showed good fittingness. Next, the numerical relationship between the investigated target characteristics and the three factors was systematic- ally analysed. At the same time, the dynamic acting process of the three factors on the same investigated characteristics in different growing and developmental periods was studied, and optimized cultivation techniques were discussed. The results indicated that under the experimental condi- tions, planting density and fertilizer had a great effect on ontogeny, population structure, and yield formation of sweet pepper. There existed certain interactions among the three factors, especially between fertilizer and water. Planting density and fruit number per plant had bigger eff- ect on yield formation of sweet. pepper.