<address id="5bf9h"></address>

<output id="5bf9h"><output id="5bf9h"><font id="5bf9h"></font></output></output><p id="5bf9h"></p>

<video id="5bf9h"></video>

<noframes id="5bf9h">

<video id="5bf9h"><output id="5bf9h"></output></video>

<video id="5bf9h"></video>
<video id="5bf9h"><p id="5bf9h"><output id="5bf9h"></output></p></video>

<noframes id="5bf9h"><output id="5bf9h"><output id="5bf9h"></output></output>

<video id="5bf9h"><output id="5bf9h"></output></video><p id="5bf9h"><output id="5bf9h"><font id="5bf9h"></font></output></p><p id="5bf9h"><p id="5bf9h"><delect id="5bf9h"></delect></p></p>

<video id="5bf9h"></video>

<video id="5bf9h"></video>

<p id="5bf9h"><output id="5bf9h"><delect id="5bf9h"></delect></output></p>
<p id="5bf9h"></p>

<p id="5bf9h"></p><video id="5bf9h"></video>

<video id="5bf9h"></video>

<noframes id="5bf9h"><output id="5bf9h"><output id="5bf9h"></output></output>
<video id="5bf9h"><output id="5bf9h"><delect id="5bf9h"></delect></output></video>
設為首頁 加入收藏

冬春氣溫低,梨園要這樣管

發布時間:2022-02-08

 

清理梨園

        徹底清理梨園的落葉、落果及梨園雜草,結合冬剪剪除枯死枝、病蟲枝和樹上僵果。

刮樹皮與樹干涂白

        刮除樹干及主枝的老翹皮、老樹皮,深度以露出淺褐色皮層為宜,不應刮破形成層,刮皮后及時對樹干或主枝的分枝處涂白。涂白劑成分配比:生石灰10公斤、食鹽1公斤、石硫合劑原液3公斤、水35公斤~40公斤,再加食用油0.2公斤或黏土2公斤。涂白要均勻,以不流不滴、干后不翹和不脫落為宜。

施用有機肥

        可施用腐熟農家肥料混合少量磷肥、鉀肥(或商品有機肥),采取溝施法,于樹冠外緣垂直投影處挖溝,溝寬度40厘米、深度50厘米。

防倒春寒

        梨樹花期較早,花前7天~10天對梨園灌1次透水,可在一定程度上降低地面溫度,推遲開花3~5天,也有利于提高坐果率。為減少落花,花期不宜灌水。

        同時,要密切關注天氣預報,在降溫前2天~3天噴施0.3%硼酸或磷酸二氫鉀或尿素,或噴施植物生長調節劑、多糖多肽類等防凍液,可有效減輕倒春寒危害。

        倒春寒發生后,如大雪覆蓋要及時震落,再追施少量水溶肥并配合澆水,恢復樹勢。開放較晚的花,要進行人工輔助授粉,提高結實率。倒春寒影響幼果發育,坐果后要及時疏除畸形果。

        (來源:農業科技報)

在线观看日本免费A∨视频
<address id="5bf9h"></address>

<output id="5bf9h"><output id="5bf9h"><font id="5bf9h"></font></output></output><p id="5bf9h"></p>

<video id="5bf9h"></video>

<noframes id="5bf9h">

<video id="5bf9h"><output id="5bf9h"></output></video>

<video id="5bf9h"></video>
<video id="5bf9h"><p id="5bf9h"><output id="5bf9h"></output></p></video>

<noframes id="5bf9h"><output id="5bf9h"><output id="5bf9h"></output></output>

<video id="5bf9h"><output id="5bf9h"></output></video><p id="5bf9h"><output id="5bf9h"><font id="5bf9h"></font></output></p><p id="5bf9h"><p id="5bf9h"><delect id="5bf9h"></delect></p></p>

<video id="5bf9h"></video>

<video id="5bf9h"></video>

<p id="5bf9h"><output id="5bf9h"><delect id="5bf9h"></delect></output></p>
<p id="5bf9h"></p>

<p id="5bf9h"></p><video id="5bf9h"></video>

<video id="5bf9h"></video>

<noframes id="5bf9h"><output id="5bf9h"><output id="5bf9h"></output></output>
<video id="5bf9h"><output id="5bf9h"><delect id="5bf9h"></delect></output></video>