李子树花期打什么药呀!现在正是开满花的时候!打砂绷 可以不?会不会一打花全落了!

2025-04-03 09:52:33
推荐回答(4个)
回答1:

可以在盛花期喷0.3%的硼砂,不会一打花全落。打硼砂可明显提高坐果率,生产上常用。

栽植时期和方法:

(1)栽植时期:北方秋栽易发生冻害和抽条现象,所以一般采用春栽。

(2)栽植方法:栽植穴一般直径1 m左右,深度0.8-1 m。挖栽植穴时必须把表土、心土分别堆放在穴的两边备用。

栽植时把李树苗垂直放在穴中央,把根全部展开,然后边填土边提动树干,使根系与土壤间没有空隙而紧密结合。

扩展资料:

李子树,别名樱桃李,常见果树,落叶小乔木,高度可达8米;在江苏大丰红叶李基地颜色通常红些,因为气候不同。干皮紫灰色,小枝淡红褐色,均光滑无毛。

主要病害及其综合防治

主要病害:

(1)李红点病:危害叶及果实。受害果发生橙红色圆形斑点,稍隆起,边缘不清楚,最后呈红黑色,其上散生深红色小粒,果实长畸形,早脱落,不能食用。

(2)穿孔病:其中包括细菌性穿孔病和真菌性穿孔病2种。均危害叶、枝、果。真菌性穿孔病还危害花芽。

(3)缩叶病:受害叶片卷曲皱缩,增厚变脆,并呈红褐色,叶片变形,枝梢枯死。

防治方法:

(1)冬季结合修剪进行清园,将枯枝、病枝、病叶集中烧毁;

(2)在发芽前喷布4~5波美度石硫合剂,消灭初次侵染来源;

(3)在开花末期和叶芽开放时,喷波尔多液1次;

(4)在5~6月根据病情喷施65%代森锌可湿性粉剂500倍1~2次。

主要虫害及其综合防治:

主要病害

(1)桑白蚧:以雌成虫和若虫群固着在枝干上吸食养料,可引起枝条或植株死亡,

(2)桃象鼻虫:成虫蛀食幼果,果面上蛀孔累累,流胶,引起落果;

(3)蚜虫:引起叶片苍白,甚至脱落,

(4)桃红颈天牛:幼虫蛀食枝条木质部,造成树干中空、枯死;

(5)梨食蜂:以幼虫蛀食幼果,

(6)梨小食心虫:以幼虫蛀食幼果,引起大量落果。

参考资料:李子树_百度百科

回答2:

  1. 盛花期喷0.3%的硼砂,可明显提高坐果率,生产上常用,不会把花喷落。一棵树按喷药液10斤计算,30斤水加1两硼砂就行了。

  2. 栽植时期和方法:

    (1)栽植时期:北方秋栽易发生冻害和抽条现象,所以一般采用春栽。

    (2)栽植方法:栽植穴一般直径1 m左右,深度0.8-1 m。挖栽植穴时必须把表土、心土分别堆放在穴的两边备用。栽植时把李树苗垂直放在穴中央,把根全部展开,然后边填土边提动树干,使根系与土壤间没有空隙而紧密结合。回填土时先填入20 cm的表土,再把心土混入肥料后填入穴内40-60 cm,边填边踩实,最上层40 cm全回填表土,回填完后栽植穴周围土面高出20 cm左右,幼苗栽植后立即灌足水。

回答3:

盛花期喷0.3%的硼砂,可明显提高坐果率,生产上常用,不会把花喷落。

回答4:

造成李子落花落果的主要原因是受了李实蜂的危害,花蕾前产卵于花柱内,造成早期落花,在果内成幼虫危害后落果。防治技术;用600-800倍阿维·高氟氯加多肽蛋白或天丰素或复硝酚钠在蕾期,盛花期前,谢花后连喷3次。可提高座果保果率。

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