Detailed Explanation of the Latest Requirements for Black Soybean Growing Environment
Black soybean is actually black soybean, but it contains more vitamins, lecithin, and especially melanin than ordinary soybean, all of which are nutrients that are very good for the human body. Regular consumption of black soybean can delay the aging of body functions and lower blood sugar. According to records in medical books, black soybean can tonify the kidney and benefit the eyes. So in what environment does black soybean grow, and what are its requirements for the growing environment? Let us learn about it together now. If you want to plant it, you definitely need to understand this.
1. Water
It needs a relatively large amount of water. The growth period needs the least water, the flowering and pod-setting period needs the most water, and the pod-swelling period needs an amount of water between the two. During the seedling stage, in order to produce more roots and produce them quickly, generally water less to promote the roots to grow downward and develop, which is beneficial to seedling growth. Irrigation is only carried out during drought, so that the seedlings will not suffer root damage from drought, absorb insufficiently, grow poorly, and die.
2. Temperature
Temperature is very important. Black soybean prefers warmth. Germination requires a temperature above 18 degrees, but it must not exceed 25 degrees. Seedlings grow quickly between 20 and 24 degrees. After the seedling stage, the most suitable temperature is between 24 and 26 degrees, mainly suitable for plant growth. During the flowering period, it must not exceed 30 degrees; if it exceeds this, the flowers cannot open, and the best temperature is around 25 degrees. Above 35 degrees affects growth. It is afraid of cold, and cannot be planted in cold regions or seasons.
3. Light
It is mainly a short-day plant. Long days will delay flowering and lengthen the growth period, but some varieties may be less sensitive to light and can still grow, flower, and set pods under somewhat longer light. The main thing is to choose varieties adapted to the local light conditions, or plant them more sparsely in the field, which can increase the photosynthetic utilization rate of the leaves. Enhance light exposure.
4. Soil Nutrients
It has no strict requirements for soil, but it is best if the pH is between 6 and 7.5. If it is too acidic, it is not easy for soybean rhizobia to grow and they cannot fix nitrogen, so the nutritional conditions are not as good. If it is too alkaline, some trace elements, such as iron, affect chlorophyll synthesis, and very little organic matter is produced. Moreover, black soybean is not tolerant of salinity and alkalinity, so it is best to plant it in deep, loose, and fertile soil, which makes growth management easier.
The main requirements for black soybean growth are a warm environment and moderately acidic to alkaline soil, and fertile, loose sandy loam is best. It needs a relatively large amount of water for growth, with the most needed during the flowering and pod-setting period, which requires special attention. Black soybean is a short-day crop, and long days affect flowering, so attention should be paid to variety selection.