Cultivation errors lead to lodging of wheat

Lodging often results in a reduction in wheat yield. A large number of surveys have shown that the reasons for the lodging of wheat are the selection of varieties with high yield traits but not lodging resistance; second is the partial application of nitrogen fertilizer, especially the indiscriminate excessive application of nitrogen fertilizer during the jointing stage of wheat; The density is too large and there are too many basic seedlings; the fourth is heading, frequent rain during the filling period, and the base of the wheat stems is softened; Fifth, the drainage in the field is not smooth, the groundwater level is too high, and the hair root is poor. To prevent the lodging of wheat, the first is to use lodging-resistant varieties of wheat, not blindly increase the amount of sowing; the second is to control the base fertilizer over-application; the third is to use the stone rolling suppression at the seedling stage; fourth is the jointing period of jointing fertilizer, high-fertility wheat field It is not appropriate to use the joint fertilizer; the fifth is to open a ditch, clear water, dark water, and promote root hair. In the chemical control measures, mainly through the application of plant growth regulators, resulting in the impediment of the biosynthesis of endogenous gibberellin in wheat, control cell growth, but does not inhibit cell division, control vegetative growth, promote reproductive growth, so that the wheat root system Developed, dense leaves and thick leaves, dark green leaves, enhance resistance to lodging. For vigorously growing wheat seedlings, spraying melatonin or dialytamine on the jointing stage of wheat to the booting stage, using 10 to 20 ml or 2 to 5.0 grams of melanin for each mu, and watering 50 Kilogram application; Second, in the spring of wheat returning to the jointing stage, with 25-30 mg per acre Zhuangfeng amine, watering spray 25 to 30 kg; three sprayed paclobutrazol powder before 10 days before the jointing of wheat, generally per acre 30 to 40 grams, 50 grams per acre that grows too prosperous, watered 30 to 40 kilograms spray; four can be sprayed 0.15 to 0.3% of chlormequat solution at the beginning of the jointing of wheat, 50 to 50 yuan per mu 70 kg, at the same time, can be applied with 2? 4-D butyl ester herbicide, can play a role in the treatment of broad-leaved weeds in wheat; five in the early stage of wheat young panicle differentiation, per acre with the North Agricultural Chemical Control II 15 grams , watering 30 kg spray. When spraying the above chemical regulators, one should strictly follow the drug dosage, the second should not re-spray or spray, and the third should be selected after sunny afternoon spraying. If it is found that the concentration of application is too large to inhibit wheat, 500-800 times Huimanfeng solution or 50 mg / liter gibberellin can be sprayed to relieve the injury.