棚内与露地条件下欧李新梢生长状况的比较

Effects of Protected Cultivation and Open Cultivation on the Growth of Chinese Dwarf Cherry Shooting

为了研究欧李在大棚内与露地新梢生长发育情况的差异,以‘农大4号’和‘农大5号’欧李为材料,对材料进行平茬后,每隔5 d对棚内与露地的新梢生长情况进行调查。结果表明:两个品种棚内新梢的生长进程比露地提早10 d。在新梢迅速生长期,两个品种露地新梢加长生长速率均极显著高于棚内;‘农大4号’品种露地加粗生长速率极显著高于棚内,而‘农大5号’不显著;两个品种棚内和露地新梢的节间长度差异不显著,棚内新梢没有出现徒长。

In order to study the difference of the growth of new shoots in the open field and in the greenhouse, two Chinese dwarf cherry cultivars ＇Nongda No.4＇ and ＇Nongda No.5＇ were used as materials in the experiment, and every five days were investigated. The results showed that the growing process of the two varieties inside facilities was 10 days earlier than their counterparts outside. In the rapid growing phase of shoots, the length growth rate of shoots of two varieties in the open field was significantly higher than the length growth rate in the greenhouse. In the open field, the thickness growth rate of the ＇Nongda No.4＇ in open cultivation was signif- icantly higher than inside the greenhouse, while the thickness growth rate of ＇Nongda No.5＇was not significant. The intemodes of two varieties have no obvious difference between in and outside the facilities. There was no excessive growth of new shoot in the facilities.