Winter is welcome. The recovery of all things, of course, also includes the aphids under the stems and leaves of plants, the high yield and good harvest of radishes, must be prepared for disease prevention. Whirlpool Bathtub,Hydro Massage Bathtub,Indoor Whirlpool Bathtub Freestanding Bathtub Shower Panel Co., Ltd. , http://www.chbathtub.com
The aphids are adsorbed on the stems and leaves of the radish, sucking the juice, making the radish plants malnourished and affecting the elongation and expansion of the underground fleshy roots, causing hollowness, reducing yield, reducing quality, spreading viral diseases and inducing soot. Causes the leaf and the top of the beam.
At the end of winter and early spring, pay attention to check the stems and leaves of radishes. When it is found that there are aphids on the stems and leaves, it is necessary to spray 2-3 times of 1500 times of 3.2% avermectin aqueous solution or 1500 times of 20% imidacloprid aqueous solution to the foliage. 1000 times 25% aqueous solution of pyrone, or 1500 times 0.5% aqueous solution of cucurbitine, spray once every 7-10 days, evenly spray all the stems and leaves to start dropping with water drops.
In addition, pay attention to ensure the water supply. Because radish is more susceptible to mites in the absence of water and drought. Therefore, it is generally necessary to rinse the water once every 2-3 days, and drench 8-10 kg per square meter of radish. When you are drenched, be sure to pay attention to the clean water, do not pour the dirty sewage with mud, so as not to induce aphids, and worsen.
10-15 days before the radish harvest, if aphids are found to be harmful, use 10-15 times dry and pure grass ash to clarify the clarified liquid, or 5-10 times the biogas liquid dilution solution, no toxic residue, spray the same day, the same day It can be harvested, does not pollute the radish, and does not endanger human health.