果農(nóng)朋友，面對今年獼猴桃花期出現(xiàn)的災(zāi)害性天氣，特在獼猴桃授粉環(huán)節(jié)提醒大家：
①溫度低于15度不要授粉。
（建議17度之上開始授粉，溫度17度是蜜蜂開始訪花采粉的溫度，隨著溫度的逐漸升高，花粉的發(fā)芽率增加和花粉管的生長也會不斷加快。所以蜜蜂都開始訪花采粉了，我們也要抓緊時間及時授粉。
②陰雨天不建議授粉，因連陰雨沒辦法，確要授粉的，需要雨停后3小時以上，將樹上雨水搖擺后，待雌花柱頭雨水滴干，可以及時授粉。
▲獼猴桃電動授粉槍
③近期陰雨連綿，溫度偏低，建議加大花粉用量（減少輔料的比例，最好1：1的配合），可以比正常年份增加1倍以上的花粉用量，每10克純花粉中加上碧護2克混勻使用。碧護的作用就是：一是能保護雌花柱頭提高抗低溫和高溫能力的作用；二是能促進雌花柱頭產(chǎn)生分泌黏液物質(zhì)，粘上花粉；三是有提高花粉發(fā)芽率及促進花粉管生長速度加快的作用。達到授粉受精成功。
▲獼猴桃花粉添加輔料
④根據(jù)天氣變化情況，靈活選擇機會多次授粉，做好授粉后的果園查看工作，授粉后第二天若柱頭直立，需要重新補授。沒有授上粉的雌花柱頭可以有4天至5天的補授時間（如果柱頭沒有干縮萎蔫，脆白色），就可以補充授粉。
面對今年授粉期間的極端天氣，我們只有關(guān)注天氣及溫度變化，擇機授粉，柱頭花粉沾足，柱頭著粉要勻。建議多次授粉，并及時查看，做好補授，盡人力最大化減少天氣對授粉的影響。
▲紅心獼猴桃圖片
Dear fruit farmers, in the face of the catastrophic weather that occurred during the kiwi flowering period this year, we would like to remind everyone during the kiwi pollination process:
① Do not pollinate at temperatures below 15 degrees Celsius.
It is recommended to start pollination above 17 degrees Celsius, which is the temperature at which bees begin to visit flowers and collect pollen. As the temperature gradually increases, the germination rate of pollen increases and the growth of pollen tubes also accelerates. Therefore, bees have started to visit flowers and collect pollen, and we should also seize the time to timely pollinate.
▲給紅心獼猴桃授粉
② It is not recommended to pollinate on rainy days because it is impossible to do so. If pollination is necessary, it is necessary to wait for at least 3 hours after the rain stops, shake the rainwater on the tree, and wait for the water droplets on the female flower head to dry before pollination can be carried out in a timely manner.
③ Recently, there has been continuous rainy weather and low temperatures. It is recommended to increase the amount of pollen used (reduce the proportion of auxiliary materials, preferably in a 1:1 combination), which can increase the amount of pollen used by more than twice compared to normal years. Add 2 grams of Bihu to every 10 grams of pure pollen and mix well before use. The function of Bihu is to protect the stigma of female flowers and enhance their resistance to low and high temperatures; Secondly, it can promote the secretion of mucus substances from the stigma of female flowers, which can adhere to pollen; Thirdly, it has the effect of improving pollen germination rate and accelerating the growth rate of pollen tubes. Achieve successful pollination and fertilization.
▲獼猴桃電動授粉槍
④ According to weather changes, flexibly choose opportunities for multiple pollination, and do a good job of inspecting the orchard after pollination. If the stigma is upright the next day after pollination, it needs to be re pollinated. Female flowers that have not been pollinated can have a supplementary pollination period of 4 to 5 days (if the stigma is not withered or brittle white).
Faced with the extreme weather during this year's pollination period, we can only pay attention to weather and temperature changes, choose the right time for pollination, and ensure that the stigma pollen is evenly spread. It is recommended to pollinate multiple times, check in a timely manner, make up for the missed pollination, and minimize the impact of weather on pollination as much as possible.
▲獼猴桃雄花蕾
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