Soybean plants should not be over-fertilized. Applying too much base fertilizer can significantly affect seedling emergence and root development. Using fertilizer as a seed treatment can severely damage the embryonic roots and hypocotyls, and in some cases, even prevent the seeds from germinating. Therefore, it is crucial never to mix chemical fertilizers with seeds during sowing. Over-application of base or top-dress fertilizers can lead to excessive vegetative growth, lodging, and ultimately lower yields. Hence, soybeans should not be over-fertilized.
After applying fertilizer, it is essential to ensure adequate water supply. If watering is delayed after fertilization, deep application may injure the roots, while surface application can cause the fertilizer to evaporate under sunlight, making it ineffective for the crop.
The choice of fertilizer should also take into account the plant type of the soybean variety. For tall-growing varieties, large amounts of fertilizer and water should be used with proper spacing. Otherwise, it may result in increased empty stalks or even lodging, which can reduce yield.
Soil fertility must also be considered when applying fertilizer. In high-fertility soils, less or no base fertilizer should be applied. For tall varieties, it is advisable to plant them more sparsely and apply additional fertilizer during the pod-filling stage.
Applying organic manure along with phosphorus and potassium fertilizers in summer soybeans helps develop a strong root system and increases the number of nodules. Therefore, soybeans benefit greatly from organic and phosphorus-potassium fertilizers. It is best to combine these as a base fertilizer, which strengthens the roots, enhances nodule formation, improves flowering, increases pod numbers, and ensures full grains.
Under normal soil fertility conditions, nitrogen fertilizer should not be applied during the branching stage. Experiments have shown that applying nitrogen at this time can inhibit root and nodule development, and even turn flower buds into leaf buds, leading to excessive growth and reduced yield.
According to many experts both domestically and internationally, applying nitrogen fertilizer during the flowering stage may increase yield. However, in general soil conditions, it is better not to apply nitrogen during flowering. If the soil is low in fertility, only a small amount of nitrogen should be used, as it may cause severe drop of buds and flowers. Applying nitrogen during the late pod-filling stage can reduce shriveled pods and significantly increase the weight of 100 seeds. It may also allow some plants to re-flower and produce pods (mostly with one or two seeds), increasing yield by 20% to 40%. This is because, by the filling stage, the plant's vegetative growth has largely stopped, and the growth rate of roots and nodules slows down. During the grain-filling period, soybeans absorb about 60% to 65% of their nitrogen and phosphorus needs, with the absolute nitrogen requirement being 8 to 9 times that of phosphorus. Thus, soybeans often experience nitrogen deficiency during the grain-filling stage. Applying nitrogen during the late pod-filling stage meets the plant’s needs without causing excessive growth, thereby significantly increasing grain yield. In phosphorus-deficient areas, a combination of nitrogen and phosphorus can be applied, with an ideal ratio of 9:1. After fertilizing, irrigation should be done promptly.
Aluminum Oxide Grinding Wheels
White alumina grinding wheel is made by
sintering first-grade sand, high-quality alumina and binder at high
temperature, also known as ceramic grinding wheel. Wear-resistant and durable.
It has high hardness, brittle abrasive grains, sharp edges and corners, strong
grinding ability, low calorific value, high temperature resistance, acid and
alkali corrosion resistance, high efficiency and good self-sharpening. The
grinding products are smooth and delicate
White alumina Bench Grinding Wheel,
suitable for grinding steel with hard material and strong heat sensitivity.
Such as grinding of hardened steel, high carbon steel, general high speed
steel, alloy steel, stainless steel, etc. Mainly used for grinding and forming
grinding of tools, cutting tools, molds, gears, threads, thin-walled parts, etc
Each of our products is inspected and
carefully packaged before being sold to customers, but we do not rule out that
there will be accidents. If you accidentally received an unsatisfactory
product, please feel free to contact us and we will replace it for you or you
can choose to return it. You can also contact us with product questions, we
will do any answer for you and will try our best to solve the problem until you
are satisfied.
Kemei produce and aim on the following
types grinding tools, such as aluminum oxide grinding wheel, silicon carbide
Grinding Wheels , mounted points, Diamond Grinding Wheels, CBN Grinding Wheels
and all types of saw blades and cut off wheels.
If you need any type of grinding tool or
professional advice about grinding on your workpieces. Don`t hesitate to
contact us!
Aluminum Oxide Grinding Wheels,Red Corundum Wheel,High Speed Grinding Wheel,Brown Corundum Wheel
Henan Jinlun Superhard Material Co., Ltd , https://www.jinlunsuperhard.com