Method for preventing and controlling farmland weeds in arid areas

Abstract

The invention provides a method for preventing and controlling farmland weeds in arid areas and particularly relates to a method for preventing and controlling malignant weeds such as solanum nigrum,chenopodium album, purslane and amaranthus retroflexus. The method comprises the steps of before sowing of crops in the arid areas, treating soil with herbicide containing a PDS inhibiting agent and then conducting mulch sowing; or after mulch sowing of the crops in the arid areas, sending the herbicide containing the PDS inhibiting agent to places where the weeds grow in films through a drip irrigation system; or before sowing of the crops in the arid areas, treating the soil with the herbicide containing the PDS inhibiting agent, conducting mulch sowing and then sending the herbicide containing the PDS inhibiting agent to the places where the weeds grow in the films through the drip irrigation system. According to the provided method, not only can the malignant weeds such as solanum nigrum, chenopodium album, purslane and amaranthus retroflexus be well controlled, the use amount of the herbicide is small, but also the herbicide is safe to the crops and environmentally friendly and can be applied in a mechanized manner, and time and labor are saved.

Description

technical field [0001] The invention belongs to the technical field of plant protection, and in particular relates to a method for preventing and controlling farmland weeds in arid areas. technical background [0002] There are many types of climates in the world, the composition of weed communities and the occurrence of weed damage are different, and the crop cultivation systems and harvesting methods are also different in different regions. Therefore, there are great specificities and differences in weed control technologies. [0003] Cotton belongs to the genus Cotton in Malvaceae in plant taxonomy, and is one of the most important economic crops in the world. [0004] Cotton is a light-loving crop and is suitable for growing under sufficient light conditions. Xinjiang has an arid climate with abundant light and heat throughout the year and little precipitation. It is the largest cotton production area in China. Due to the continuous adjustment of the planting mode and ...

AI Technical Summary

Problems solved by technology

[0006] In 2005, Liang Jinfeng and Li Jiangping respectively studied the control effect of pendimethalin and several other herbicides on Solanum nigrum; Sunflower, high doses are likely to cause phytotoxicity to cotton, and the higher the medicament concentration, the stronger the phytotoxicity to cotton seedlings (Journal of Jiangxi Agricultural University, 2014, 36(1), 102-108); in 2015, Wang Jianfeng et al. The effect and persistence of Wuling in removing Solanum nigrum are not ideal (Rural Science and Technology, 2015, 3, 54-55)

[0012] Due to the geographical environment, climatic factors, and sowing methods are roughly the same as those of Xinjiang cotton, and they are often rotated with cotton, there are many malignant weeds in the zucchini field for seed, such as nightshade, quinoa, purslane, and amaranth, which seriously affect the Seed Zucchini Yield

[0013] At present, there are few chemical control methods for seed weeds in zucchini fields, and the most commonly used is to use 48% Zhongbuling EC herbicide. , but less effective against the vicious weed Solanum nigrum

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