烯酰吗啉对苦瓜的安全性评价及对苦瓜霜霉病的防效研究
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摘要
为了明确烯酰吗啉对苦瓜的安全性及对苦瓜霜霉病的防效,开展50%烯酰吗啉可湿性粉剂对苦瓜的安全性测定和五地防治苦瓜霜霉病的田间药效试验。用量150、300、450g a. i/hm~2施药3次药后10d最高防效在80%以上,施药2次药后10d最高防效为71. 9%。药后14d植株生长速率抑制率为-3. 07%～-135. 88%、落花增加率为-7. 35%～-47. 38%; 450、900g a. i/hm~2对苦瓜无药害。50%烯酰吗啉可湿性粉剂对苦瓜生长、开花无抑制作用,安全。用量300、450g a. i/hm~2喷雾3次,间隔7d,能有效减轻霜霉病的危害。
In order to determine the safety of dimethomorph to balsam pears and its control effect to downy mildew,the tests on safety evaluation of dimethomorph to balsam pears and efficacy to balsam pears downy mildew in 5 sites were carried out. The obtained highest control effect was more than 80% 10 d after spraying 3 times and 71. 9% after spraying 2 times at all the application rates of150,300 and 450 g a. i/hm2. The inhabitation rates were-3. 07% ～-135. 88%,and the flower drop rate was increased by-7. 35% ～-47. 38% 14 d after treatment. No damage to balsam pears was observed when treated at the rate of 450 and 900 g a. i/hm2. It can be concluded that dimethomorph 50% WP is safe to balsam pears while controlling balsam pears downy mildew effectively by spraying 3 times at 300 and 450 g a. i/hm2 with an interval of 7 days.
In order to determine the safety of dimethomorph to balsam pears and its control effect to downy mildew,the tests on safety evaluation of dimethomorph to balsam pears and efficacy to balsam pears downy mildew in 5 sites were carried out. The obtained highest control effect was more than 80% 10 d after spraying 3 times and 71. 9% after spraying 2 times at all the application rates of150,300 and 450 g a. i/hm2. The inhabitation rates were-3. 07% ～-135. 88%,and the flower drop rate was increased by-7. 35% ～-47. 38% 14 d after treatment. No damage to balsam pears was observed when treated at the rate of 450 and 900 g a. i/hm2. It can be concluded that dimethomorph 50% WP is safe to balsam pears while controlling balsam pears downy mildew effectively by spraying 3 times at 300 and 450 g a. i/hm2 with an interval of 7 days.
引文
[1]张玉灿,张武君,陈阳,等.丝瓜砧木对苦瓜产量及品质的影响[J].福建农业学报,2012,27(4):337-342.
[2]吕佩珂,刘文珍,段半锁,等.中国蔬菜病虫原色图谱续集[M].呼和浩特:远方出版社,2000:101-102.
[3]李新,赵平,严秋旭,等.杀菌剂烯酰吗啉的应用及市场概况[J].农药,2011,12(50):862-863..
[4]胡燕,王开运,许学明.等.烯酰吗啉对我国烟草黑胫病菌的毒力研究[J].农药学学报,2006,8(4):339-343.
[5]石明旺,高扬帆.新编常用农药安全使用指南[M].北京:化学工业出版社,2011:316-318.
[6]王现,全耿军,肖斌,等.烯酰吗啉·福美双可湿性粉剂防治黄瓜霜霉病药效[J].农药,2001,29(12):35-36.
[2]吕佩珂,刘文珍,段半锁,等.中国蔬菜病虫原色图谱续集[M].呼和浩特:远方出版社,2000:101-102.
[3]李新,赵平,严秋旭,等.杀菌剂烯酰吗啉的应用及市场概况[J].农药,2011,12(50):862-863..
[4]胡燕,王开运,许学明.等.烯酰吗啉对我国烟草黑胫病菌的毒力研究[J].农药学学报,2006,8(4):339-343.
[5]石明旺,高扬帆.新编常用农药安全使用指南[M].北京:化学工业出版社,2011:316-318.
[6]王现,全耿军,肖斌,等.烯酰吗啉·福美双可湿性粉剂防治黄瓜霜霉病药效[J].农药,2001,29(12):35-36.