Field management of wheat jointing and booting stage
When the population is underdeveloped at the jointing stage, the yellowing is too early, the soil is thin and the seedlings are thin, and there is obvious de-fertilization, it is necessary to apply heavy fertilizers early, fully supply nutrients, and strive for more tillers to become effective ears. The fertilization time can be dominated by quick-acting nitrogen fertilizer before jointing, and the population is suitable at jointing. The number of stems is higher before jointing and ends at the peak of tillering. The leaf color is normal and faded. When the first section has been fixed, the jointing fertilizer can be applied as appropriate. For the jointing, the population is too large, the leaves are thick green and drooping, and the growing wheat field can not be fed with fertilizer, or after the leaf color is faded, when the tip of the flag leaf is exposed, a small amount of booting fertilizer is applied. For example, if the panicle fertilizer has no leaf color fading, it is not appropriate to apply the booting fertilizer to prevent the green and late ripening and reduce the yield.
1. Applying body fat, jointing fertilizer, and booting fertilizer to promote strong stalk and big ear.
(1) Get up fat: If the amount of wheat in the early stage is insufficient, the weak seedlings with low density must catch up with the body fat in time, usually 7 kg of urea after 10-15 days before jointing. Strong seedlings, Wang Miao does not apply fertilizer.
(2) Jointing fertilizer: The application quantity is related to the fertility of the variety and the early growth of the plant, and the 3-5-kilogram of urea can be recovered per mu per mu. Wang Miao does not apply, and weak seedlings are properly applied.
(3) Pregnancy fertilizer: Where there is no fertilizer, if there is a deficiency of fat in the booting ears, it is necessary to apply the panicle fertilizer. Generally, when the flag leaves are exposed, the urea is 2-3 kg per mu.
2, drought-resistant and stain-proof, root-protecting leaves. Wheat waterlogging is caused by surface water, shallow water and groundwater, with shallow water being the most harmful. Therefore, it is necessary to make the ditch straight and flat, and the ditch and ditch can communicate with each other to make the rain live in the field, clear the water in the rain, dilute the water on sunny days, reduce the groundwater, improve the soil ventilation conditions, and create a good soil environment for the wheat growth under the rainy environment.
3. Prevent lodging. The lodging of wheat occurs mostly after heading, but the cause of lodging is formed from jointing to booting. When the middle, high fertility and dense field begin to elongate in the first section of wheat base, 15 per acre. % of paclobutrazol WP 8g, sprayed with 75kg of water, can play a dwarf anti-falling effect, while promoting production.
4. Prevent pests and diseases. Mainly to prevent wheat scab, rust, powdery mildew and sticky insects, mites and other hazards.
5, root dressing. Topdressing of wheat roots can increase the seed setting rate and 1000-grain weight, accelerate the ripening process of wheat, shorten the growth period by 1-2 days, and generally apply potassium dihydrogen phosphate, superphosphate lime leaching solution and grass ash leaching solution before the milk ripening period. A small amount of nitrogen fertilizer. 0.2% potassium dihydrogen phosphate aqueous solution 1-2 times, every 7-10 days.
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