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将低需冷量的桃树品种栽植于温室中,通过栽培技术措施迫使它们比普通果园桃树提前几个月开花结果.试用了以下5种化学促芽处理:氰胺氢(Hydrogen cyanamide)、硝酸钾(KNO_3)、疏脲(thiourea)、二硝基化合物(DNC)分别处理以及 DNC 处理7天后再用 KNO_3和硫脲处理。没有一种促芽处理效果好过对照,除KNO_3外,其余试剂均对树体有毒害作用.硫酸锌(ZnSO_4)作为化学脱叶剂无效.人工摘叶则成功地使芽萌发。2月(晚夏)与3月(早秋)摘叶促开了一些花,但其中许多花要么在开放前脱落,要么呈现总体畸形.显微观察表明,胚珠异常包括无胚囊和有些情况下无珠心的现象,摘叶时间延迟至6月(早冬),则提高了开花数,减少了畸形花的比例,从而增加了产量.1月(夏季)土壤施用多效唑(PP333)可以控制旺盛的营养生长,处理比对照增加花量1倍,但其中双雌花比例高,且双雌均可座果成熟,因此更要求疏花疏果。尽管如此,处理仍提高了经济产量.
The low-yielding peach cultivars were planted in greenhouses and their cultivation techniques were used to force them to flower several months earlier than ordinary peach trees.The following five chemical sprouting treatments were tested: Hydrogen cyanamide, KNO3, thiourea and dinitro compound (DNC) were treated with KNO3 and thiourea respectively after treated with DNC for 7 days. No effect of promoting budding was better than that of control, except for KNO_3, all the other reagents had toxic effects on the tree.Zinc sulfate (ZnSO_4) was not effective as chemical defoliants.Artificial pickoff leaves germinated successfully. February (Late Summer) and March (Early Autumn) picking off leaves promote some flowers, but many of them flower either before opening or presenting a gross abnormality. Microscopic observations indicate that ovarian abnormalities include blast-free embryos and in some cases In the summer (summer) application of paclobutrazol (PP333) could be controlled well by increasing the number of flowering and reducing the proportion of deformed flowers, thus increasing yield. Of the vegetative growth, treatment than the control to increase the amount of 1 times, but the high proportion of double female flowers, and double female can be fruit ripening, it also requires thinning thinning fruit. In spite of this, the treatment still raises the economic output.