广宁红花油茶广寄生开花结实特性与防控药剂  

Flowering and fruiting characteristics of Taxillus chinensis and its chemical control on Camellia semiserrata

作　　者：郭业先 练涛 田龙艳 柳军 邱华龙[1] 秦长生[1] 赵丹阳[1] 徐金柱[1] GUO Yexian;LIAN Tao;TIAN Longyan;LIU Jun;QIU Hualong;QIN Changsheng;ZHAO Danyang;XU Jinzhu(Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization,Guangdong Academy of Forestry, Guangzhou 510520, China;Zhangmutou State-Owned Forest Farm, Dongguan 523003, China)

机构地区：[1]广东省林业科学研究院,广东省森林培育与利用重点实验室,广州510520 [2]广东省国有樟木头林场,东莞523003

出　　处：《植物保护》2022年第3期242-247,262,共7页Plant Protection

基　　金：广东省林业科技创新项目(2019KJCX025)。

摘　　要：广宁红花油茶作为重要的油茶作物,在种植过程中受到广寄生的严重危害。为阻断广寄生的传播和蔓延,为广寄生的防控提供技术支撑,对广寄生开花结实特性与防控药剂开展了研究。对广东省樟木头林场广寄生开花结实动态的定点监测结果表明:广寄生的花期为7月-12月,果实成熟期为9月-翌年2月,花果期长达7个月以上。通过喷淋法研究4种植物生长调节剂对广寄生及寄主广宁红花油茶生长的影响,以筛选防控广寄生的化学制剂。结果表明:选用的30%胺鲜·乙烯利水剂、5%萘乙酸水剂、50%丁酰肼可溶性粉剂及0.1%S-诱抗素水剂4种植物生长调节剂对广宁红花油茶上的广寄生均有一定的防控作用,其中30%胺鲜·乙烯利水剂的防控效果显著优于其他药剂,1∶400的处理防效最优,且未对红花油茶产生明显药害。Taxillus chinensis is a perennial parasitic seed plant which seriously harms Camellia semiserrata in Zhangmutou Forest Farm,Guangdong province.In order to completely prevent and control T.chinensis,the flowering and fruiting characteristics and control pesticides were investigated in this essay.The results showed that the flowering phase of T.chinensis was from July to December,and the fruit mature period was from September to February of the following year.The flowering and fruiting period was more than seven months.Four plant hormones,diethyl aminoethyl hexanoate·ethephon 30%AS,1-naphthylacetic acid 5%AS,daminozide 50%SP abscisic acid 0.1%AS were used to control T.chinensis on C.semiserrata.The results showed that all the four plant hormones exhibited significant control effect on T.chinensis,and diethyl aminoethyl hexanoate·ethephon 30%AS was the best choice.Diethyl aminoethyl hexanoate·ethephon 30%AS diluted 400-fold was a suitable dosage to accelerate the flower-drop and fruit-drop of T.chinensis and harmless to the growth of C.semiserrata.

关 键 词：广宁红花油茶 广寄生 开花结实动态 化学防控 

分 类 号：S453[农业科学—植物保护]