枣树开花量大、落花落果重。据报道,金丝小枣在乐陵产区的自然坐果率只是0.24％～1.6％)。所以为提高坐果率,在生产中除加强肥水、合理修剪保证光照之外,还可采用以下方法。 1.枣头摘心 于6月份枣花开放至坐果期,在枣头长1/3处摘心。注意不宜过早,以免刺激营养生长。 2.开甲(即环状剥皮) 开甲适期为盛花期,从距地面30cm处开始,环剥位置每年上移4～5cm。环剥宽度依生长势不同而异:弱树2～3mm、中庸树3～4mm、壮树4～5mm。若甲口过宽,可涂泥或绑缚塑料薄膜以促进甲口愈合。 3.生长调节剂 盛花初期喷洒10～15×10~(-6)的 Jujube flowering large, falling flowers and fruit weight. It is reported that Jizo jujube in Leling producing natural fruit rate is only 0.24% ~ 1.6%). So in order to improve the rate of fruit set, in addition to strengthening the production of fertilizer, pruned to ensure reasonable lighting, the following methods can also be used. 1. Jujube topping heart Jujube flowers in June to open set fruit period, at the head of 1/3 length topping. Attention should not be too early to avoid stimulating vegetative growth. 2. open armor (that is, ring-shaped peeling) open a suitable flowering period, from the ground 30cm at the beginning of the ring girdle position every year 4 ~ 5cm. Girth width varies according to the growth potential: 2 ~ 3mm weak tree, moderate tree 3 ~ 4mm, strong tree 4 ~ 5mm. If the mouth is too wide, can be painted mud or tied plastic film to promote healing of the mouth. 3. Growth Regulator Sheng early flowers spraying 10 ~ 15 × 10 ~ (-6)