| 单词 | defoliant |
| 释义 | defoliant noun[CorU] uk/ˌdiːˈfəʊ.li.ənt/us/ˌdiːˈfoʊ.li.ənt/achemicalthat is used to make theleavesdropoffplants 落叶剂，枯叶剂Environmental issues
Examplesofdefoliantdefoliant Pesticides were classified as insecticides, miticides, herbicides, crop preparation growth regulators and defoliants. From theCambridge English Corpus This indicator is commonly used by cotton crop managers to help them decide, for instance, on the best time to stop spraying insecticides or applydefoliant. From theCambridge English Corpus Another of these defoliants is an organic arsenic-containing compound which was used to destroy elephant grass and rice. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0 We must remember that 3½ million acres were sprayed with defoliants and that there was a total of 6 million casualties. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0 He is recognised as perhaps the highest authority in that country on plant physiology and on the herbicide anddefoliantcampaign. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0 The only chemical agents have been defoliants, and those used in riot control. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0 My question also deals with defoliants. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0 Other applications includedefoliant, herbicide and an additive to rubber to protect it against oxygen and ozone. From Wikipedia  This example is from Wikipedia and may be reused under a CC BY-SA license.Forests were sprayed with defoliants, thousands of rural forest dwelling people uproots from their homes and moved and roads driven into previously isolated areas. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Defoliants are used in cotton production to aid harvesting. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.It has been said that over 3.2 million liters and kilograms of chemical defoliants were sprayed during that time. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.In 1901, studies of thedefolianteffect of leaking gas pipes led to the discovery that ethylene is a plant hormone. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Data provided by these techniques were used in comparative evaluation ofdefoliantchemicals in relation to rate, volume, season of application, canopy penetration, and vegetation response. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Defoliants differ from herbicides in that the former seeks mainly to strip leaves from plants, and the latter is used to destroy or inhibit the growth of plants. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Salt and dust storms and the spraying of pesticides and defoliants for the cotton crop have led to severe degradation of air quality in rural areas. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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