A Full Analysis of the Latest Fertilizer Requirements of Winter Wheat
Now it is already the sowing season for winter wheat, and everyone is also successively carrying out the preparatory work before sowing winter wheat. Winter wheat is relatively cold-resistant, but it also needs sufficient nutrients to improve the growth capacity of winter wheat and ensure that the wheat can successfully overwinter. However, many people do not strictly control the nutrient ratio of fertilizers, resulting in failed wheat planting and extremely low yields. Today, the editor brings you the fertilizer requirement characteristics of wheat, so let's take a look together below!
1. Fertilizer requirement characteristics
The fertilizer requirement of winter wheat is relatively large, and it has different requirements for nitrogen, phosphorus, and potassium fertilizers. Moreover, as the variety and growth stage of winter wheat differ, the degree of demand for them also differs greatly, and the application ratio of nitrogen, phosphorus, and potassium must also be determined according to the planting region, climate environment, and planting method, among other aspects. However, there are still general patterns to follow. During the entire growth period of winter wheat, the demand ratio for nitrogen, potassium, and phosphorus is roughly 3:3:1.
2. Nitrogen fertilizer demand
During the growth period of winter wheat, the demand for nitrogen fertilizer is relatively large, and the application of nitrogen fertilizer should be reasonably controlled according to the growth progress of winter wheat. Among these, when winter wheat is at the seedling stage and tillering, the proportion of nitrogen fertilizer demand reaches 1/5. This is because when winter wheat is at the seedling stage, it is winter, and the low winter temperature is very unfavorable to the growth of the seedlings. At this time, sufficient nitrogen fertilizer is needed to enhance the cold resistance of the seedlings and increase the growth rate. Then, when winter wheat grows to the jointing stage, it is the time when the growth capacity of winter wheat is strongest, and the demand for nitrogen fertilizer also rises sharply. This is the period of the entire growth period of winter wheat when the demand for nitrogen fertilizer is greatest. However, nitrogen fertilizer must not be excessive, otherwise it will cause excessive tillering growth, resulting in vigorous but excessive vegetative growth, leading to a large winter wheat plant population but poor quality.
3. Phosphorus fertilizer demand
When winter wheat grows to the flowering stage, the demand for phosphorus fertilizer is greatest, and the phosphorus fertilizer demand at the flowering stage reaches 7/10 of the phosphorus fertilizer of the entire growth period. During this period, sufficient phosphorus elements should be ensured, which is beneficial to the differentiation of winter wheat flower spikes and promotes the photosynthesis of wheat, increasing the accumulation of carbohydrates in wheat. The next relatively important time is the greening stage of winter wheat. Although the demand is far less than at the flowering stage, phosphorus elements at the greening stage also have a great impact on the growth of winter wheat. It can promote the differentiation of winter wheat, improve the rooting capacity of the roots, and increase the number of tillers and new leaves. It can protect winter wheat through the winter well, so when applying base fertilizer, we must increase the proportion of phosphorus fertilizer.
4. Potassium fertilizer demand
The demand for potassium fertilizer in the early growth stage of winter wheat is not too high. The time when the potassium demand is greatest is when winter wheat grows to the booting stage. The potassium demand at this period can reach 3/5 of the total, and it is also the period with the best potassium fertilizer conversion rate. Providing sufficient potassium fertilizer at this stage can make winter wheat grow robustly, improve the plant's nutrient absorption and transport, and accelerate the grain filling rate. When winter wheat reaches the flowering stage, the proportion of potassium fertilizer can be seen to gradually decrease, because excessive potassium fertilizer will cause potassium efflux. This not only wastes fertilizer but also reduces the potassium fertilizer content in the plant.
The above is the editor's brief introduction to the fertilizer requirement characteristics of winter wheat. Many friends, when planting winter wheat, only pay attention to the application of potassium fertilizer. They often ignore the two basic fertilizers, phosphorus and potassium. Excessive application of nitrogen fertilizer will not only lead to insufficient nutrition for winter wheat, but also easily cause various problems and have a relatively large impact on the growth of winter wheat. That is all for today's introduction. This article is for reference only. Thank you everyone for reading and supporting.