The greenhouse vegetable bean protection five measures

For the greenhouse bean, it is difficult to prevent flowers from falling and protect the flowers. Because kidney beans have higher requirements for temperature, light, humidity, and nutrients, once the management is not good, it can easily result in falling flowers.

First, control the temperature

Beans are particularly sensitive to temperature, and too high or too low a temperature can cause falling flowers. In general, the optimum temperature for bean pods is 19~25°C. Higher than 25°C or lower than 19°C can cause flower buds to fail to differentiate properly. Caused by falling flowers.

Second, ensure adequate lighting

Under normal circumstances, the most serious flowering plants on the bottom of the bean plants are the dense planters, excessive foliage, and weak light at the bottom. Therefore, it is necessary to timely and sparsely picking leaves to improve the ventilation and translucency between the plants; using a film with good drip-free performance, rub the film frequently to improve the transparency of the film; .

Third, coordinate good nutrition

Undernutrition of the bean will directly lead to falling down. It is recommended that vegetable growers should use organic fertilizer as the main fertilizer (such as large-source fish protein fermented soybean meal with 1000-2000 kg per acre, 1000 kg of color domination, etc.), combined application of nitrogen, phosphorus, and potassium (available for water-soluble fertilizer 20:20:20) and attach importance to the application of trace elements in fertilizers. It is also necessary to adjust the amount of watering so as to achieve prosperous control and concentrate nutrient supply for the growth of flower buds, which can reduce the occurrence of falling flowers.

Fourth, adjust the humidity in the shed

In general, when the air humidity is too high or too small, pollen grains cannot be pollinated normally, resulting in falling flowers. The reporter learned that in the management of kidney bean, the farmers have the concept of “dried flowers and dampness”. That is, when the kidney bean is in flowering, it is not watered, and it waits until it is watered after sitting on it. In fact, this practice is wrong. If the air humidity is too low, it is not easy for the bean to sit on it. It is advisable that the vegetable farmer depends on the conditions in the shed. If it is too dry, it should be done once.

Fifth, spray booster

In order to prevent the emergence of falling beans in kidney bean, it can be sprayed with 1500 times of booster when the bean vines climb to the steel wire. It can prevent vine growth and promote flowering. If it is more serious due to prolonged flowering and falling, 3000 times naphthalene acetic acid can be used to spray the bean inflorescence, according to the specific circumstances of application 1 to 3 times.