Causes and Control measures of Flower and Fruit drop of Schisandra chinensis

Schisandra chinensis is a kind of traditional Chinese medicine, which has high medicinal value and has the effect of strengthening the body, but the phenomenon of falling flowers and fruits often occurs in the process of planting Schisandra chinensis, which seriously affects the yield of Schisandra chinensis. So what is the reason for the drop of Schisandra chinensis? How to prevent it? Let's take a look at the detailed introduction.

1. Low temperature

During the flower bud differentiation of Schisandra chinensis, if it encounters cold air and cold current, it will cause physiological chilling injury and cause some flower buds to fall off.

Prevention and control measures: give priority to the prevention of low temperature cold injury, pay attention to the weather forecast, fumigation can be used to prevent and control the cold current when the cold current is coming, strong seedlings can be selected during planting and timely irrigation to reduce the impact of low temperature cold injury.

2. Herbicide

From April to May, the flowering of Schisandra chinensis is a machine, and it is also caused by the raging of weeds. In order to eradicate weeds, many farmers often use herbicides to weed, but the petals come into contact with herbicides during spraying. It will make the female flowers unable to pollinate normally, resulting in falling flowers.

Prevention and control measures: the phenomenon of falling flowers caused by herbicides should be grasped from the source, attention should be paid when spraying herbicides, it should not be sprayed on leaves and flowers, and mitigation agents should be sprayed when drug damage occurs.

3. Diseases and insect pests

The main diseases of Schisandra chinensis are root rot, leaf blight and powdery mildew, which will cause fruit drop when they are serious, while pests such as leaf rollers and foam cicadas are mainly harmful from May to August, and they will also cause fruit drop in serious cases.

Control measures: timely control of diseases and insect pests, disease prevention and comprehensive control, root rot can be controlled by carbendazim, leaf blight can be controlled by methyl topiramate spray, and deltamethrin EC and omethoate EC can be used to control insect pests.

4. Improper management of fertilizer and water.

When Schisandra chinensis is lack of fertilizer and water, its growth will be inhibited, and the phenomenon of falling flowers and fruits will be particularly prominent in the long-term drought and lack of fertilizer.

Prevention and control measures: reasonable topdressing irrigation, topdressing with compound fertilizer and special fertilizer, appropriate supplement of some trace elements to ensure adequate plant nutrients.

5. Environmental pollution

When the plant is an industrial polluted area, chemical enterprises emit waste gas and produce drug damage caused by acid rain, which will lead to the phenomenon of falling flowers and fruits without timely prevention and control. In addition, the smoke produced by burning coal or boiler will also cause carbon poisoning in the fruit of Schisandra chinensis and fall off.

Prevention and control measures: Schisandra chinensis plantations should be far away from polluted areas and highways, should be built according to pollution-free production standards, standard flower cultivation, at the same time to reduce the use of pesticides and chemical fertilizers, and timely prevention and control of drug damage caused by acid rain.

The above is the introduction of Schisandra chinensis flower and fruit drop reasons and control measures, hope to help you, want to know more related knowledge, please pay attention to us.