During lettuce elongation, sufficient nitrogen and potassium fertilizers are needed to expand rapidly. The specific cast is as follows: Nitrogen and potassium fertilizers were applied once at the beginning, middle and later stages of lettuce elongation, each time applying 15 to 20 kg of urea, 8 to 10 kg of potassium sulfate, or 20 to 25 kg of potassium nitrate to water or biogas slurry or After the decomposed human and animal dung water is 150 to 200 times, it is evenly sprayed on the soil around the roots of the lettuce plants, and it is appropriate that the fertilizer liquid completely penetrates into the soil and does not flow out. In addition, during lettuce elongation and expansion, 0.3% urea, 600 times potassium amino acid mixed solution, or 0.5% potassium nitrate aqueous solution should be sprayed 2 to 3 times every 7 to 10 days. Spray all the leaves evenly, and it is advisable to start dripping water drops, and supplement the nitrogen and potassium fertilizers from the leaves. Disclaimer: Some articles on this website are transferred from the Internet. If you have third party legal rights, please inform this website to deal with them. phone Paprika,Organic Chilli Powder Paprika,Chilli Crushed Paprika Powder,Natural Paprika Guizhou Guisanhong Food Co., Ltd , https://www.guisanhong.com
Lettuce needs nitrogen and potassium