Growth habit of concanavalis
1. temperature: kidney beans like temperature and heat resistance. Seeds germinate above 18, and the most suitable time to germinate long leaves is between 18 ~ 28. The suitable temperature for flowering is between 25 and 30, and the pod setting temperature needs to be higher than 20, but not more than 35.
2. Fertilization: Do not water before flowering, till once to avoid falling flowers. Wang also applied compound fertilizer once for a long time, mainly nitrogen fertilizer, topdressing after pod setting, topdressing twice at the peak of pod setting, and thinning branches and leaves at the same time, so that nutrition concentrated on pod setting.
3. illumination: sword beans like strong light, so they need long-term illumination, especially during flowering and pod setting. Lack of light will lead to falling flowers and pods, which can generally be encountered in a suitable climate and season. When planting, it is necessary to control the plant spacing and row spacing.
4. Soil: It is very important to keep water and fertilizer well when planting soil, with high growth temperature, strong sunlight and fast transpiration. It is best to plant it in fertile soil without hardening, otherwise it is difficult for the roots to absorb water and nutrients, and it is not allowed to plant it in saline-alkali land and low-lying land.
Planting time and season of sword bean
Canary can be planted in spring, summer and autumn, and suitable varieties must be selected according to the climatic conditions of each season. Seedling raising in February-March in spring, sowing in March-April, harvesting in June-August, and harvesting seeds in July-August. Sow in May and August in summer and autumn, and harvest in 7- 10.
Knife bean planting method
1, soil preparation
Canadian conch is suitable for planting in loose, fertile sandy loam with high organic matter content and good drainage and ventilation. Deep ploughing in autumn and harrowing in spring can better improve soil structure. Base fertilizer should be applied to the soil in advance and must be fully decomposed.
Step 2 sow seeds
Before sowing, choose full, neat and disease-free seeds, put them in the sun for one day, soak them in warm water for about 24 hours, sow them after imbibition, with umbilical cord facing down, which is convenient for water absorption.
Step 3 raise seedlings
Seedling raising is generally carried out in March-April in spring. Seedbed can be a hotbed or a cold bed. Before sowing, the soil moisture is sufficient. After sowing, cover with 3 cm of soil. Don't water too much, keep proper temperature and humidity to avoid seed rot.
4. Tian Tuan management
When the height of Canadian sword bean seedlings is 10 cm, it can be thinned, calibrated, fixed and replenished. Four-leaf stage combined with intertillage, weeding and topdressing. When the height is 35 cm, a bracket more than 2 meters high can be inserted. It can also be made of ropes such as fences, fences, walls and trees.
5, pest control
Common diseases and pests in the growth period of sword bean include rust, root rot, aphid, red spider, whitefly, bean stalk fly and so on. At the initial stage of the disease, the corresponding pesticides can be sprayed in time, and the efficacy can be enhanced with a new high-fat film, which can improve the utilization rate of pesticides.
Step 6 harvest after maturity
The growth cycle of concanavalis is long, which takes about 90- 120 days. Generally, pods can be picked when they are 12-20 cm long, and they will be harvested in the summer of August in the north until the first frost comes.