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Cardinal草莓植株于8月栽植,移栽后35天叶面喷施PP333(浓度为0、75、150、300、600、1200mg/l),测定PP333对草莓当年生长的影响和用黑色塑料薄膜覆盖的双行垄作苗床对翌年植株生长的影响。结果表明,随着PP333浓度的增加而草莓匍匐茎数量和长度则降低。同时流向子株的生物产量也受到限制。当第一年生长结束后,处理株增加了侧冠的发育但降低了单株的叶面积。当浓度>600mg/l时根的生长减少;75～300mg/l浓度使植株的总干重增加了33%～46%;≥300mg/l的处理降低了翌年植株的生长量。除了1200mg/l外,其它浓度都提高了草莓产量。叶片净光合作用在处理后12天开始增加,到翌年夏天也比对照高。处理后当年的叶片气孔通导性也增强,至翌年仍明显大干对照。草莓施用PP333的最适浓度似乎是在150和300mg/l之间。
Cardinal strawberry plants were planted in August and 35 days after transplanting, PP333 (0, 75, 150, 300, 600, 1200 mg / l) was sprayed on the foliage to determine the effect of PP333 on the growth of strawberry and covered with a black plastic film The effect of double row ridge on seedbed on plant growth in next year. The results showed that the number and length of strawberry stolons decreased with the increase of PP333 concentration. At the same time the biological yield to the sub-strains is also limited. When the first year of growth ended, the treated plants increased the development of lateral crowns but decreased the leaf area of individual plants. When the concentration> 600mg / l, the growth of roots decreased; the concentration of 75 ~ 300mg / l increased the total dry weight of the plants by 33% ~ 46%; the treatment of ≥300mg / l reduced the growth of the plants in the following year. Except 1200mg / l, other concentrations increased strawberry yield. Net photosynthesis in leaves began to increase 12 days after treatment and was higher than that in the summer of the following year. Leaf stomatal conductance of the same year was also enhanced after treatment, to the next year is still significantly dry control. The optimum concentration of strawberry for PP333 appears to be between 150 and 300 mg / l.