摘要： 试验采用半矮蔓和矮蔓西葫芦各2个品种,研究了温室西葫芦茎叶生长动态和干物质积累、分配之间的关系。结果表明,两类西葫芦叶和茎的生长均为"S"型曲线,且不同年份中均表现为时间函数;进入结果期后,两种类型之间出现差异且逐渐明显,半矮蔓西葫芦的叶发生速率、茎生长速率和单株叶面积分别是矮蔓品种的1.3,2.1和1.7倍,干物质积累速度约是矮蔓的1.2倍;向果实的干物质分配,半矮蔓由24%增加到28%,而矮蔓由27%增加到38%,向果实的过度分配,致使矮蔓品种营养生长过早地衰竭,单株产量的差异达28%。表明干物质生产与分配情况会对西葫芦茎叶生长产生显著影响,进而影响最终产量。

关键词: 西葫芦, 生长动态, 干物质积累和分配

Abstract: This paper researched two types of zucchini, semi-bush and bush.Each type selected two varieties.The experiment studied the relationship between dynamic process of leaf and stem growth and dry matter accumulation and distribution.Three years results showed, the growth of leaf and stem were " S" curve and expressed time function in different planting years; In fruiting period, the difference between the types was appeared and gradually abvious, the leaf growth rate, the stem growth rate and leaf area of single plant in semi-bush zucchini were 1.3,2.1 and 1.7 times than bush; The dry matter accumulation rate of semi-bush is 1.2 times than bush, the ratio of dry matter in semi-bush fruit is from 24% to 28%,but bush zucchini is from 27% to 38%.The exess distribution of fruit induced exhaustion of vegetable growth earlier and the yield difference reached to 28%.It indicated that the dry matter accumulation and allocation abviously effected the vegetable growth and yield．

Key words: Zucchini, Dynamic growth, Dry matter accumulation and distribution

中图分类号: 

• S642.6