A 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, especially for preventing and controlling malignant weeds such as nightshade, quinoa, purslane, and retroflexus. After the herbicide treatment of pesticides, the film is sown; or after the film is sown on the crops in the dry area, the herbicide containing the PDS inhibitor is sent to the place where weeds grow in the film through the drip irrigation system; or before the crops are sown in the dry area The soil is treated with a herbicide containing a PDS inhibitor, and after the film is sown, the herbicide containing a PDS inhibitor is sent to the place where weeds grow in the film through a drip irrigation system. The method provided by the invention can well control the malignant weeds Nightshade, Chenopodium, Purslane, Amaranth, etc., has less dosage, is safe for crops, and is environmentally friendly, and the application of the medicine can be mechanized and time-saving save effort.

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 regions. [0002] technical background [0003] 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. [0004] Cotton belongs to the genus Cotton in Malvaceae in plant taxonomy, and is one of the most important economic crops in the world. [0005] 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...

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Problems solved by technology

[0007] 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)

[0013] Because 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 black nightshade, quinoa, purslane, and amaranth, which seriously affect the Seed Zucchini Yield

[0014] At present, there are few chemical control methods for seed weeds in zucchini fields, and the most commonly used is to use 48% zhongbutaline EC herbicide. Although this herbicide has certain control effects on quinoa, purslane, and retroflexus , but less effective against the vicious weed Solanum nigrum

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