| 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。 |
| 关键词: 绝对生长率,净同化率,叶面积指数,日均温,青花菜 |
| DOI： |
| 分类号: |
| 基金项目: |
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| The Characteristics and Constraints of Dry Matter Production in Broccoli |
|
Fan Lihong Lu Gouyi
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| Abstract: |
| There were significant or extremely significant correlations between net
assimilation rate(NAR) and crop growth rate (CGR) in seedling stage,the leaf area index (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,theaveragedailytemperature(AT)wa:themajorfaetoraffeetingNARand
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 produetion 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. |
| Key words: absolute crop growth rate, net assimilation rate, leaf area index, average daily temperature, broccoli |
