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为弄清摘心对枣树的生长发育和座果的形态及生理效应,笔者进行了10余年的试验。试验地在河南省西华县的郑庄、田口和新郑县的肖庄、麻线张村,品种为鸡心枣和灰枣。花期(6月中、下旬),当新生枣头有4～5个枣拐时,强枣头留4个、弱枣头留3个枣拐进行摘心,留一半不摘心的作对照。通过形态指标调查和叶分析,研究了枣头花期摘心的效应。结果表明:(1)摘心可促进枣头及二次枝的生长发育,提高座果率。当年平均每个二次枝的座果数量比对照多48％,摘心第二年的增产效果更为显著,鸡心枣和灰枣的座果数,摘心的比对照分别高225％和386％。(2)摘心可提高枝叶
In order to understand the pinot noir growth and development of fruit and fruit shape and physiological effects, the author conducted more than 10 years of testing. Experimental sites in Xihua County, Henan Province, Zheng Zhuang, Taguchi and Xinzheng County, Xiao Zhuang, twine Zhang Village, varieties of chicken heart dates and dates. Flowering (mid-June, late), when the newborn jujube head has 4 to 5 jujube, jujube head stay 4, weak jujube head three jujube turn topping, leaving half of the heart not as a control. Morphological indicators and leaf analysis were used to study the effect of topping in the first flowering stage. The results showed that: (1) Topping could promote the growth and development of jujube head and secondary branches and increase the fruit set rate. In the same year, the average number of fruit per secondary branch was 48% higher than that of the control. The yield increase was more significant in the second year of topping, and the number of fruit and heart in Jixinzao and Ziziphus jujuba were 225% and 386% higher than the control respectively. (2) topping can improve foliage