How to control the bamboo leaf grass in the cotton field?
First of all, the appropriate medicament is selected, and then the dosage is determined according to the type of weeds, leaf age and humidity. For example, when soil moisture is suitable, the amount of active ingredient per mu is 917g / mu, 17g / mu, 24g / mu, 27g / mu and 27g / mu, respectively. Spraying on stems and leaves was carried out at the stage of 2-5 leaves of Gramineae weeds. Summer application should choose windless weather, when the temperature is relatively low in the morning and evening, it is required to spray evenly and keep no rain within 3 hours after spraying, which can improve the efficacy.
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Honeysuckle, a greening plant that can be used as medicine and has excellent anti-pollution.
Honeysuckle is widely distributed in China, ranging from Liaoning in the north, Shaanxi in the west, Hunan in the south, Yunnan and Guizhou in the southwest, is a kind of woody vines, evergreen and fragrant flowers widely planted in the garden. In a small courtyard, they can walk through the wall to expand green coverage, and send fragrance all over the courtyard in summer, which can reduce the irritability of summer heat. Honeysuckle belongs to honeysuckle family. Its paired, simple axillary flowers are juxtaposed. When they are first released, the petals are all white and as white as jade. After two or three days, the petals are all white.
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Symptomatic prevention and treatment of dead cotton trees
In recent years, in some old cotton areas, the problem of "dead trees" of cotton has become more and more serious, causing many cotton farmers to suffer losses. Although prevention and control has also been carried out, it is still as serious as a year, and the effect is not ideal. Therefore, it is necessary to "give priority to disease prevention and treatment as a supplement" to prevent and control cotton diseases and reduce the incidence of cotton. 1 Control of oomycetes diseases with the popularization of disease-resistant and insect-resistant cotton species in recent years, the diseases of "dead plants" of cotton have changed, of which the most important diseases are oomycetes, 60% to 70% are caused by Phytophthora or Pythium, etc.
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