温湿度控制黄瓜幼苗徒长的效果研究
2017-07-13李中奇倪维晨宁云霞李少星李瑞霞
李中奇 倪维晨 宁云霞 李少星 李瑞霞



摘要 [目的]研究温湿度控制黄瓜幼苗徒长的效果,以期达到壮苗的目的。[方法]以不同温湿度对连栋大棚黄瓜幼苗进行处理,通过物理方法调控黄瓜幼苗生长,研究温湿度控制黄瓜幼苗徒长的效果。[结果]地表下20 cm土层的2个处理黄瓜幼苗壮苗指数最高,可以通过降低地温来调控黄瓜幼苗的徒长;由于水分的调控与温度和光照密切相关,不宜控制,尽量避免采取控水措施来调控幼苗的生长。[结论] 该研究为采用更多的物理方法调控蔬菜幼苗生长研究提供理论依据。
关键词 温度;湿度;黄瓜;幼苗;徒长
中图分类号 S604+.3 文献标识码 A 文章编号 0517-6611(2017)13-0027-02
Effect of Combination of Temperature and Humidity on Spindling of Cucumber Seedlings
LI Zhong-qi, NI Wei-chen, NING Yun-xia, LI Rui-xia* et al
(Institute for New Rural Development of Nanjing Agricultural University (Changshu), Suzhou, Jiangsu 215500 )
Abstract [Objective] To study effect of combination of temperature and humidity on spindling of cucumber seedlings,in order to achieve the strong seedling.[Method]This experiment was conducted by physical methods in different temperature and humidity to study effects on the spindling of cucumber seedling. [Result]The cucumber seedlings in -20 cm soil layer showed good results in robust seedling index, so measures on reducing the temperature were adopted to regulate the moderate growth of cucumber seedlings. Due to moisture control was closely related to the temperature and illumination, therefore moisture control measures werent taken to control the growth of seedling. [Conclusion] The study provides the theory basis for research on regulation of vegetable seedling growth by more physical method.
Key words Temperature;Humidity;Cucumber;Seedling;Spindling
近年来,随着农业内部结构的调整,蔬菜生产逐步迈上了产业化发展的道路,蔬菜育苗成为蔬菜产业化生产中的一个重要环节。秧苗质量的优劣直接影响蔬菜的生长、花芽分化、座果及果实的发育,最终影响产品的产量和质量[1]。近年来兴起的机械化穴盘育苗技术摆脱了自然条件的束缚和地域性的限制,实现了蔬菜种苗的工厂化生产、商品化供应。但在穴盘育苗条件下,由于高度集约化的生产和穴盘构造的特殊性,培育的穴盘苗地上部与地下部生长受到限制,如果育苗时再遇到高温高湿,特别是夜间和阴雨天高温高湿、光照不足、幼苗拥挤以及移植或定植不及时等情况下,很容易造成秧苗徒长。徒长苗的主要表现是根系不发达;茎细弱,节间长;叶片稀少,叶薄,色淡黄;……
