原创《移栽期对NC55叶片发生进程模拟模型建立》：这篇移栽论文范文为免费优秀学术论文范文,可用于相关写作参考。
摘 要：为合理配置烟草品种NC55大田生育期,采用田间对比试验,设置4月25日、5月5日、5月15日3个移栽期,研究不同移栽期对NC55叶片发生进程的影响,明确有效积温和叶片发生的关系,并建立Richards生长动态模型.结果表明,不同移栽期并没有改变烟草最终叶片数目,但对叶片发生动态规律有明显影响,各部位叶片发生时间均随移栽期推迟而缩短,但不同处理的中、上部叶发生所需有效积温无显著差异.建立了烟草叶片发生动态模型,R2值均在0.980以上,表明模型准确度很高；移栽期主要通过调控参数B值、K值和N值对叶片发生进程进行调控；有效积温综合模型的准确性好于生长时间综合模型；烟草叶片发生模型是只有缓增期和快增期的不完整“S”型生长曲线.
关键词：NC55；移栽期；叶片发生；模型
中图分类号：S572.01文章编号：1007-5119（2016）02-0047-07DOI：10.13496/j.issn.1007-5119.2016.02.009
Abstract： In order to reasonably arrange field growth period of tobacco variety NC55, field experiments with three transplanting time treatments （04-25, 05-05, 05-15） were carried out to study the effects of transplanting time on the initiation process of tobacco leaves, to identify the relationship between effective accumulated temperature and leaf initiation, and to establish dynamic models. The results showed that transplanting time did not change the final number of leaves, but the dynamic change of leaf initiation was significantly affected by transplanting time.The initiation time of leaves was shortened as the transplanting time delayed. However, the effective accumulated temperature required for the initiation of middle and upper leaves had no significant difference among different treatments. The dynamic models of leaf initiation were established with high precision, as the R2values of all models were higher than 0.980. The transplanting time affected the dynamic process of leaves initiation mainly by controlling B, K and N values. The accuracy of the model with growth time as independent variable was better than that of the model with effective accumulated temperature as independent variable. The dynamic model of tobacco leaf initiation was an incomplete “S” type growth curve, which included slow growth period and rapid growth period only.
Keywords： NC55； transplanting time； leaf initiation process； simulation model
烟草生长发育及品质特色是遗传特性、生态条件和栽培措施共同作用的结果[1-2],在同一地区生态条件相对稳定的基础下,栽培措施中的移栽期即成为影响烟草生长和品质的关键因素.不同移栽期导致烟株不同生育期对应的气候条件不同,从而使烟株生长发育规律发生变化,进而影响烟叶的产量和品质[3-6].烟草适宜移栽期的选择,实质是根据烟草生长发育的持续性和阶段性的要求,趋利避害,把烟草田间生长发育和烟叶成熟均安排在适宜的生态环境中.作物生长模拟方程可解释作物生长曲线形状,建立叶片发生和生长时间或有效积温之间关系的动态模型,对于确定群体结构,实现农业生产的信息化、数字化具有重要意义[7-8].
关于烟草叶片生长发育规律及移栽期对烤烟生长的影响已有较多研究[9-14],对于烟草叶片生长动态模型构建也有报道[15-17],但有关移栽期对烟草叶片发生规律的影响、叶片发生动态模型等研究很少.本研究选用烤烟NC55为试验材料,研究不同移栽期对叶片发生动态特征的影响,分析有效积温和叶片发生的关系,并以生长时间和有效积温为自变量,建立烟草叶片发生的动态模拟模型,利用模型特征参数对其动态特征进行定量分析,为在山东合理安排NC55移栽期和叶片发生进程,提高烟叶质量,彰显烟叶特色提供理论参考.
1材料和方法
1.1 地点及品种
试验于2014年在山东省诸城市贾悦镇琅埠农场进行,土壤类型为黏质土,土壤pH7.2,全氮1.07g/kg,碱解氮63.7mg/kg,全磷0.71g/kg,有效磷43.6mg/kg,全钾21.7g/kg,速效钾254mg/kg,有机质11.1g/kg.供试品种为NC55.
移栽论文参考资料：
结论：移栽期对NC55叶片发生进程模拟模型建立为关于移栽方面的的相关大学硕士和相关本科毕业论文以及相关移栽怎么用生根粉论文开题报告范文和职称论文写作参考文献资料下载。
