A course on the latest techniques and methods of soybean growth control

In the process of soybean growth, due to improper fertilization, excess water or high-temperature and high-humidity environment, soybean plants will flourish, resulting in serious flower and fruit drop, resulting in a sharp decline in yield and affecting the income of farmers. So how to control prosperity? Let's take a look at the detailed introduction.

1. Symptoms of flourishing and growing

In general, when there is a phenomenon of vigorous growth of soybean, the leaves of soybean grow vigorously, the field is completely cold, and the permeability is very poor, so it is necessary to control it. In addition, from the outside, if the upper leaves of soybean are dark green, and the leaf area is larger, the lower leaves are yellowing and shedding. It can also be judged from the inflorescence that if there are only a small number of inflorescences in the upper part of the main stem and few inflorescences in the branches and lower parts, this is also a phenomenon of vigorous growth.

2. Fertilizing to control prosperity

Nitrogen fertilizer should be applied as little as possible when fertilizing, because the root system of soybean itself has very strong nitrogen fixation, so it is forbidden to apply nitrogen fertilizer to the already prosperous fields in the rainy climate. A small amount of molybdenum fertilizer can be sprayed at the early flowering stage, and the concentration is 0.1%. 0.2%, while for the fields with poor growth, a small amount of nitrogen fertilizer can be applied together with molybdenum fertilizer at the early flowering stage, about 5 kg per mu, and we should also pay attention to the concentration.

3. Chemical control

At present, the most common measure to control growth in production is to spray paclobutrazol, which is a plant growth retarder, which can hinder the rationality of plant growth promoters and inhibit the vertical growth of cells. However, in the consumption of paclobutrazol, the requirements for time and dosage are better, and its explanation is slow. It will have an impact on the growth of subsequent crops.

4. Man-made prosperity control

Chemical control of soybean growth at flowering and pod stage can not effectively organize the growth of soybean. At this time, artificial growth control technology can be adopted to control plant growth and increase field permeability by means of leaf thinning and heart picking. In the early stage of plant growth, timely tapping and cutting leaves for prosperous plants, but should not be too ruthless, it is generally appropriate to pinch off the tender tip of 2-3 cm from the top of the main stem.

The above is the introduction of soybean boom control technology, hope to help you, want to know more related knowledge, please follow us.