【摘要】 青花菜苗期NAR,花芽分化期LAI,显蕾期NAR、LAI,花球成熟期NAN与其CGR呈显著或极显著的正相关。苗期日均温(AT)是影响NAR,CGR的主要因素,AT在12～26℃范围内,提高温度,可提高NAR和CGR;花芽分化期,AT在13～26℃范围内,AT升高,对CGR,LAI的提高有利;显蕾期干物质生产受LAI,AT,日射量的综合影响,AT是影响NAR,CGR的主要因素,LAI对NAR的影响次于AT,起负效应;花球成熟期LAI,AT,日射量对NAR及CGR的作用趋势,因播期而异。更多还原

【Abstract】 There were significant or extremely significant correlations between net assimilation rate(NAR) and crop growth rate(CGR) in seedling stage, the leaf area in-dex(LAI) and CGR in inflorencence differentiation stage, NAR,LAI and CGR in button forming stage, NAR and CGR in flower head maturity stage of broccoli. In seedling stage, the average daily temperature (AT) was the major factor affecting NAR and CGR. In the range of 12~26℃ of AT, At rises, which is favourable for NAR and CGR rising. And in inflorensencence differentiation stage, and AT in the range of 13~26℃ , rising At is helpful to raise LAI and CGR. In button forming stage, dry matter production was affected by LAI, AT and daily solar radiation(SR). AT was the main factor affecting NAR and CGR. Effect of LAI on NAR, smaller than AT, was negative. NAR and CGR had the different response to LAI, AT, SR in flower head maturity stage of different sowing dates.更多还原