Optimum temperature: 25-30 degrees Celsius.

Cowpeas (beans) require high temperatures and have strong heat resistance. The suitable growth temperature is 20-25°C. In summer, they can still form pods normally at temperatures above 35°C and the flowers will not fall off. However, they are not frost-resistant. If the temperature is below 10℃ for a long time, the growth will be inhibited.

According to the seed germination rate measurement conducted by the Vegetable Research Institute of the Chinese Academy of Agricultural Sciences, germination is faster at 25-35°C, and the germination rate and germination potential are best at 35°C.

Below 20°C, germination is slow and the germination rate is reduced. Below 15°C, both germination rate and germination potential are poor. After sowing, carob seeds will grow into seedlings quickly when they are unearthed at 30-35°C; after vines are drawn, they will grow better at a temperature of 20-25°C.

High temperatures around 35°C can still grow and form pods; plants grow slowly around 15°C, growth is inhibited if the temperature is below 10°C for a long time, and plants freeze when close to 0°C.

Extended information:

Growing conditions

1. Lighting

Long beans (pods are more than 30 cm long), sunshine length requirements Not strict. Beans are a light-loving crop and require good sunlight during the flowering and pod-setting period. If there is insufficient light, flowers and pods will fall.

2. Moisture

Bean growth requires an appropriate amount of moisture, but it can tolerate drought. The seed germination and seedling stages should not be too humid to avoid reducing the germination rate or causing the seedlings to grow too long or even cause root rot and death. The flowering and pod-setting period requires appropriate air and soil moisture.

Excessive rain, high humidity, or dry and cold winds can easily cause flowers and pods to fall. Moreover, excessive soil moisture is not conducive to the activities of plant roots and rhizobia, and may even lead to root rot, causing flowers and pods to drop.

3. Soil

Carob beans have wide adaptability to soil and can be cultivated in loose soil with good drainage and irrigation, but sandy loam is the best. Beans are suitable for planting in soil with pH 6. 2^-7. However, if the soil is too acidic, it will inhibit the growth of rhizobia and affect the growth and development of plants.

Nutritional value

Cowpeas are rich in vitamin B, C and plant protein, which can calm people's minds, regulate the digestive system, and eliminate chest and diaphragm swelling. It can prevent and treat acute gastroenteritis, vomiting and diarrhea. It has the effects of quenching thirst and strengthening the spleen, nourishing the kidneys and stopping diarrhea, replenishing qi and promoting fluid production.

Baidu Encyclopedia--Cowpea

Baidu Encyclopedia--Cowpea