摘要
为实现板栗密植园板栗植株树体矮化、小冠、丰产的目的，进行了喷施不同浓度的多效唑（PP333）控制板栗树体枝条生长的试验。其试验结果表明：喷施适当浓度的多效唑能有效地抑制板栗植株枝条的生长。喷施浓度为1000-1500mg-L^-1的多效唑稀释液100天后，与不喷施多效唑的对照相比，其板栗植株的枝长生长量可减少56．2％-65．9％，而枝粗增加0．09-0．11cm，提高板栗的结实率达17．4％-22．2％。使用多效唑的浓度过高达2000mg·L^-1以上时会产生药害，不仅抑制板栗植株新梢的生长，且减少其结实率。使用多效唑的浓度过低，原粉剂稀释的浓度为500mg·L^-1以下时，对板栗植株枝条的生长无明显抑制作用。
In order to achieve the objectives of short stem, small crown of high yield chestnut, paclobutrazol （ PP333 ） of different concentrations were applied in tested chestnut close planting garden located in Eshan county of Yunnan province. The experimental results showed that PP333 of proper concentration could effectively inhibit the branch growth of chestnut trees. One hundred days after spraying PP333 of 1 000 - 1 500 mg/L, compared with the control, the growth of branch length decreased by 56.2 % to 65.9 %, the diameter of branch increased by 0. 09 cm to 0. 11 cm, the fruit setting percentage increased by 17.4 % to 22. 2 %. High concentration of PP333 such as 2 000 mg/L caused chemical injury, the growth of new branch was inhibited, and the fruit setting percentage decreased. Low concentration of 500 mg/L, no significant inhibition effect was produced.
出处
《西部林业科学》
CAS
2009年第2期71-74,共4页
Journal of West China Forestry Science
基金
云南省"九.五"科技攻关项目"板栗新品系区试与集约化栽培技术研究"(95A6-4-2)
