噴施不同藥劑對蘋果花抗霜凍能力的影響

打開文本圖片集

中圖分類號：S661.1 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號：1002-2910（2025）02-0022-05

Effects of spraying different chemicals on frost resistance of apple flowers

LU Chao1， JIANG Caina2， XUE Xiaomin1* （1.Shandong InstituteofPomology/State Key Laboratory ofNutrient Useand Management，Tai'an，Shandong 271000， China; 2.College of Horticulture， China Agricultural University， Beijing l0o193， China）

Abstract： Using the flowers of Fuji apple in full bloom as experimental materials， the effects of spraying organic calcium， frost-proof agent and brassinolide on the freezing situation and cold-resistance physiological indexes of flowers were studied by artificial simulation of frost conditions. The results showed that spraying organic calcium， frost-proof agent and brassinolide could reduce the freezing rate of flowers， and spraying organic calcium was the most effective. Compared with the control， the relative conductivity of spraying organic calcium at different low temperature duration decreased and the soluble protein content increased. The proline content of spraying frost-proof agent at different low temperature duration decreased. The SOD activity of spraying brassinolide at different low temperature duration increased; The POD activity of spraying organic calcium at different low temperature duration increased. The malondialdehyde content decreased after spraying brassinolide for different duration of low temperature.

Key words： apple; florescence; frost; relative conductivity; osmoregulatory substances; protective enzyme activity

霜凍是影響中國蘋果生產(chǎn)最主要的氣象災(zāi)害之一，近年來呈現(xiàn)出多發(fā)頻發(fā)的特點(diǎn)，導(dǎo)致部分蘋果產(chǎn)區(qū)霜凍災(zāi)害呈加重趨勢，對蘋果生產(chǎn)危害最重的是花期霜凍。（剩余6826字）