Flower reasonable choice and use of herbicides

1 according to the size of Ages medication a biennial woody flowers , whether planting seedlings or cuttings , seedlings are present its tender branches shallow roots , root underdevelopment, poor tolerability , hence should be used when spraying low doses . Commonly used herbicide oxyfluorfen , prometryn and so on. Generally applied before the flower bud marinated pharmaceutical toxic soil , can prevent slips, dicotyledonous weeds, valid for one month , does not affect seedling growth .

(2) According to the degree of precious flowers medication is generally expensive flowers on the environmental conditions and management requirements are relatively high , from a safety point of view , the choice of foliar treatment , such as using the " feeder " and other herbicides formulated as 0.3 to 0.4% concentration liquid, with smearing weed control , avoid using aerosol low pressure sprayer spray drift leading pharmacy has caused injury to seedlings . There is also available indigenous pesticide poisoning .

3 According to the growth characteristics of medication smiling flowers , camellia , magnolia and other flowers as leathery leaves , waxy layer on the leaves , and some conifers with fragrant flowers and leaves of butter, these flowers and strong resistance , it can be directly using the " feeder " and other systemic herbicide to do foliar treatment . Some flowers and leaf quality thin , wax less , such as Tau , France holly, Indus , etc. , and some flower leaves are fluff, such as hibiscus, Mama rust ball etc. These flowers are not appropriate to " feeder " direct spray , garden hand sprayers optional efficient " Gallant " on the stems and leaves do targeted treatment , both to control grassy weeds , but also to ensure the safety of seedlings .

4 Classification according to medication woody flower flowers resistant to herbicides generally stronger than the herb flowers . Flowers on the grass suitably selective herbicides , such as " Gallant ", " grass g ," " Take fishing net ", in doing shoots with flowers growing season . On coniferous woody species such as cypress , larch, cedar , etc., can also use the " feeder " doing foliar treatment . For some broadleaf woody species such as ash , acacia, Bauhinia, hibiscus and other species more sensitive to insecticides , can do oxyfluorfen soil treatment, wash with water after application required seedlings, nursery stock to ensure safety .