The latest course of fertilization techniques and methods for black beans

Black bean is a kind of soybean, also known as horse bean, winter bean, black soybean, because its seed coat is black, it is not only edible, but also has high nutritional value. With the expansion of its planting area, you know its fertilization method, let's take a look at the detailed introduction with the editor.

1. Apply sufficient base fertilizer

Soil fertilizer black beans with the early nutritional basis, it can meet the nutrition needs of black beans before flowering, as soon as possible emergence, strong seedlings. The base fertilizer is mainly organic fertilizer. Generally, plots with medium or insufficient fertility can apply 1000-1500 kg of rotten organic fertilizer per mu, while plots with sufficient fertility can apply 500-1000 kg of mature organic fertilizer per mu. In addition, it should be reasonably matched with nitrogen, phosphorus and potassium fertilizer, generally applying 8-10 kg diammonium phosphate and 10 kg potassium sulfate per mu. When fertilizing, it can be applied to the bottom of the ridge combined with soil preparation, or it can be applied to the seeds when sowing, but it should not be in direct contact with the seeds to avoid burning roots and dead seedlings.

2. topdressing at the right time

After applying sufficient base fertilizer in the early stage, there is generally no need for topdressing, but after the black bean blossoms, there is a great demand for fertility, so it is necessary to topdressing in time. Topdressing should also be determined according to the fertility of the soil, the types of fertilizer and the growth of black beans. In general, plots with general fertility can apply 3-5 kg of urea or 6-10 kg of ammonium sulfate per mu at the early flowering stage, and spread fertilizer on one side of the plant. it can be buried in combination with ploughing and weeding. On the other hand, in the land with sufficient fertility, if the plant grows vigorously, we can not apply nitrogen fertilizer to avoid overgrowth of the plant, and we can apply some phosphorus and potassium fertilizer appropriately to increase the disease resistance and lodging resistance of the plant. But the fertility is poor needs to carry on the topdressing in the seedling stage, generally bleats into the diammonium phosphate 8-10 kg, promotes the seedling growth.

3. Foliar topdressing

The leaves of black beans have strong absorption function, and they can absorb both fertilizers and trace elements, but there is a great demand for fertility during the flowering and podding stage of black beans, and the method of foliar topdressing can be used when the soil nutrients are insufficient or the root absorption is weak. The amount of foliar topdressing is small, but the fertilizer effect is fast, which can solve the urgent need of plant fertilizer. the types of foliar topdressing include urea, potassium dihydrogen phosphate, potassium sulfate, ammonium molybdate, borax, zinc sulfate and so on. Attention should be paid to the concentration when foliar topdressing is carried out. Generally, the concentration of nitrogen, phosphorus and potassium is about 1%, while the concentration of trace fertilizer is about 0.01%. You can choose to spray 2-3 times in the early flowering stage of black bean, with an interval of about 10 days each time.

The above is the introduction of black bean fertilization technology, hope to help you, want to know more related knowledge, please follow us.