Fertilization in spring wheat fields should be based on the application of organic fertilizers, rational application of chemical fertilizers, increase fertilizer utilization, and reduce soil pollution. In general, high-yield fields control nitrogen, stabilize phosphorus, increase potassium, supplement micro, and stabilize the nitrogen and increase phosphorus in the middle-field, and apply potassium fertilizer in a targeted manner. From the physiological point of view of wheat, from the stage of greening to getting up, the plants continue to divide tillers, leaves and hair roots, and begin to differentiate young ears. It is to consolidate the strong seedlings before winter, to strive for the growth of weak seedlings, and to inhibit the growth of seedlings. Period. Therefore, according to different types of wheat fields, it is necessary to adopt different fertilization measures. Seeing seedling fertilization can be summarized in three words: protection, promotion, and control. Guarantee When I was wintering, I had reached the "six leaves and one heart", four or five branches, the total stems of the acres had reached 800,000, the plants were strong, the leaves were normal, and the yellows were not yellow. Do not fertilize immediately after returning to green. Watering, in order to prevent excessive growth, consume too much nutrients, is not conducive to high yield in the later period. In this kind of wheat field, measures such as rowing, weeding, pest control, etc. should be taken to ensure effective tillering and safe growth before the year, which is conducive to increasing the rate of wheat heading and laying a good foundation for high wheat yield in the later period. The field measures are mainly based on “guaranteeâ€. Before and after the wheat jointing stage, fertilization and watering are applied. This is also called the nitrogen post-fertilization method, which is beneficial to high yield of wheat. promote Plants that were planted late in the morning, have poor fertility conditions, and have insufficient base fertilizer; when winter, the wheat seedlings are short and have few tillers; when they return to green, the plants are weak, the leaves are yellow, and the total number of stems is less than 400,000; or the straw is returned to the field. Without pouring over the winter water, the soil is loose and breathable, the water evaporates strongly, the soil is dry, and the wheat field where the wheat seedlings appear to hang the roots should be poured back into the green water in time to apply the green fertilizer. It is important to emphasize that it is very important to choose the right fertilizer for this type of wheat seedling! First, do not apply or apply less organic fertilizer. As the saying goes: circle fertilizer to raise land, fertilizer to promote seedlings. Due to the low temperature in early spring, the decomposition of farmyard manure is slow and cannot meet the needs of wheat for nutrients. Second, it is necessary to apply quick-acting chemical fertilizers, because the fertilizers are quick and effective, and can supply the growth and development needs of wheat in time. You can apply 10~15 kg of urea per acre and pour the green water. On this basis, the foliar fertilizer can be sprayed once, which promotes new roots, cold resistance, drought resistance and disease resistance, and is beneficial to the weak seedlings of wheat. Third, when fertilizing, we should also pay attention to the weak seedlings in some high-yield fields. It is necessary to apply some eccentric fertilizer to make the growth of the whole plot consistent, which is conducive to wheat yield increase. control Before the planting was too early, the amount of sowing was too large, and there was a prolonged wheat. Because of the early closure of the ridge, the leaves were scattered, the leaves were too large and too thin, after returning to green, they should adopt the measures of "control". Draw, try not to water, pick up the seedlings. In addition, we should pay close attention to whether there is any freezing damage. If there is freezing damage, corresponding measures should be taken. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Zhejiang Haisheng Medical Device Co., Ltd , https://www.hisernmedical.com
Wheat is prosperous in spring and depends on seedling fertilization
After the spring, the winter wheat enters the greening stage. The period from the greening to the picking of the flag is the spring growth stage, which lasts for 50 to 60 days, which is the key period for the formation of yield. After the wheat returns to green, the growth is prosperous, and the absorption of nutrients is gradually increasing. Therefore, it is imperative to pursue the jointing of the panicle fertilizer.