Pouring up the jointed fertilizer water to top up the nitrogen fertilizer during the jointing period of wheat can not only increase the protein content significantly, but also is a key period to increase the wheat yield. Therefore, it is necessary to use the jointed fertilizer water according to local conditions. The grain yield and protein content of wheat depend to a large extent on the nitrogen supply level during the development period. In the range of 16 kg of pure nitrogen per 667 square meters, the grain protein content increases with the increase of nitrogen content.
In the fertilization, the fertilization method of “pre-promotion, central control, and post-reformation†is adopted, that is, 50% of the base fertilizer, 50% of the jointing and panicle fertilizer, and the weight-preserving and anti-premature aging. In the case of appropriate soil moisture, the ground cover is generally suitable for the ground conditions, and the first watering in spring should be postponed until the early stage of jointing to control the excessive growth of spring inefficient tillers and the elongation of the base of the stem. Watering per 667 square meters of standard nitrogen fertilizer of about 30 kg;
For the land with high ground force and high seedlings, the fertilizer water can be delayed until the end of the jointing stage; for the land with poor soil fertility and weak seedlings, the first fertilizer in spring can be replenished in advance to the body. In the later stage, the application of a small amount of fertilizer after the booting stage of wheat can not only reduce the flowering stage and increase the number of grains per spike, but also increase the protein content of the grain and increase the quantity and quality of gluten.
In the middle and late stages of wheat growth, 5-7 kg of urea should be applied per 667 square meters in combination with watering from the picking stage to the heading and flowering stage. It can also be sprayed with 2%-3% urea solution at the flowering stage. 0.3%-0.5% potassium dihydrogen phosphate solution, spray 50-60 kg per 667 square meters. However, the fertilizer should not be too late in this period, the soil fertilization is not later than the flowering period, and the foliar application is generally no later than the filling period.
In the later stage, reasonable control of watering wheat milk to ripening stage, proper control of watering can improve the grain gloss and keratin rate, significantly reduce the phenomenon of "black embryo", increase grain protein content, and prolong dough stability time, so from yield and quality Synchronous optimization considerations should be properly controlled in the later stages of wheat growth.
Recommended reading: wheat during the winter season, the right amount of topdressing can prevent frost damage
Wheat frost damage is one of the disasters in wheat production in the northern wheat region. Especially in low temperature and dry years, the freezing damage is heavier, which makes the wheat yield greatly affected. In order to prevent the freezing injury of wheat during the winter, in addition to the varieties with strong cold resistance, there are the following measures.  Appropriate amount of topdressing For the wheat field with insufficient fertilization before sowing, the appropriate amount of topdressing before wheat wintering can consolidate the effective tillering of wheat, increase the sugar content of the tillering section, and enhance the cold resistance of the plant itself. When topdressing, nitrogen, phosphorus and potassium should be mixed, and the proportion should be appropriate. Special attention should be paid to the application of phosphate fertilizer. It is forbidden to apply nitrogen fertilizer to avoid causing the growth of the stem tissue of the plant to be too soft and to reduce the cold resistance and lodging resistance. 
Covering the manure and spreading 300-400 kg of wheat bran and wheat straw per acre in the dry wheat line. This method not only protects and freezes, but also improves the soil and fertilizes the soil after the cover is corroded. It is an effective measure for drought resistance, antifreeze and yield increase of wheat. In addition, after the wheat enters the wintering period, 3-4 cm manure is applied to the ridge, commonly known as warm ditch, which can avoid wind and moisture, increase temperature and freeze, and supplement nutrients for the growth of wheat seedlings. Evening wheat fields, shallow wheat fields, sandy wheat fields, and wheat fields with weak spring varieties should be given priority. 
When the wheat seedlings are about to stop growing before wintering, the combination of the roots of the soil can effectively prevent the wheat from being frozen during the winter. In the colder, more arid and windy years, the antifreeze effect of the roots of the bauxite is particularly obvious, generally increasing the yield by 5%-10%. 
In the timely winter irrigation, before the arrival of cold air, a winter irrigation is carried out, which has significant effect on seedling and yield increase of wheat. Pay attention to timely tillage and suppression after winter irrigation to ensure the protection. 
Timely cultivating and timely cultivating can prevent cold and prevent phlegm and prevent freezing damage. Therefore, it is more important to combine winter irrigation with timely cultivating, especially clay. For the late glutinous wheat field, the lower wet wheat field, more cultivating, early cultivating, can play a role in ensuring warming. 
Timely fumigation into the winter should pay close attention to the weather changes, before the cold current, in the evening to early morning in the field, piled wheat, straw and other smoke, can reduce the freezing damage. 
Spraying hormones such as wheat occurs prolonged before wintering, especially when there are signs of winter jointing, and foliar application should be carried out with 0.3%-0.5% chlormequat before the arrival of cold air. After the spring, it is necessary to tighten the cracks on sunny days to control the growth of the aboveground parts of wheat, or to apply soil fertilizer or mud to protect the tillers and young ears of wheat. 
This article URL: Winter Wheat Planting Fertilization Technology
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