Hello, it’s not a disease. It’s caused by high temperatures after a long period of shade, or water loss from the leaves caused by too fast ventilation in the greenhouse.

It is caused by factors such as large external temperature differences and high temperatures. To put it simply, it is caused by high temperatures and large temperature differences. The edges of the leaves lose water and dry up. If it is in a greenhouse, it is also possible for the film to drip. If it is a greenhouse, you must pay attention to ventilation in advance when the temperature is high. Spray with brassinoids + sea food amino acid foliar fertilizer to alleviate the problem. Spray once every 7 days and twice in a row to regulate growth.

Cultivation and management methods of green beans

1. Green beans can be broadcast live, or seedlings can be transplanted. Generally, seedlings and transplants are used. Through seedling transplantation, vegetative growth can be appropriately suppressed and promoted. reproductive growth. Select the land well, apply base fertilizer, water appropriately, use disease-resistant seeds, and use new high-lipid film to dress the seeds, which can repel underground diseases and insect pests, isolate viral infections, do not affect the germination and swell function, strengthen respiratory intensity, and increase the seed germination rate. .

2. The planting period of snap beans should be determined based on the cultivation method and growth indicators. When using nutritious soil blocks to raise seedlings, they can usually be planted when the first compound leaves develop. When using nutrient pots to raise seedlings, transplanting can be delayed until there are 2 to 3 compound leaves. After the seedlings are transplanted, spraying a new high-fat film can effectively prevent the water on the ground from evaporating and the water from the seedling body from transpiration, isolate pests and diseases, shorten the seedling slowing period, quickly adapt to the new environment, and grow healthily.

3. It is not advisable to apply too much fertilizer in the early stage of beans to prevent excessive fertilizer and water from causing leggy growth. Watering, fertilizing, weeding, and prevention of pests and diseases must be done reasonably. Targeted drugs should be sprayed and a new high-fat film should be sprayed to greatly increase the amount of pesticides and nutrients. The utilization rate of the active ingredients of fertilizer is high, it is not afraid of evaporation due to sun exposure, it can adjust the amount of water absorbed, and it can prevent drought and rain.

4. After the plants bloom and form pods, fertilizer and water should be added. After the vines are removed, the vines should be set up in time, with a height of 2.0 to 2.5m. After the vines are set up, the vines should be introduced in time, and the vines should be introduced in the afternoon on a sunny day. Do not do it on rainy days or in the morning to prevent breakage.