1, rational fertilization
The withered and yellow leaves of cucumber can be treated by reasonable fertilization. Improper fertilization will cause fertilizer damage to plants and make leaves yellow. At this time, it is necessary to apply fertilizers containing amino acids and humic acids to reduce fertilizer damage, and pay attention to it when the soil humidity is low.
Step 2 lower the temperature
Cucumber leaves are dry and yellow, which may be due to high temperature. When the tuyere suddenly opens in a large area, the air flows too fast, taking away the moisture on the leaves, which leads to the phenomenon of yellow leaves. At this time, you can use the method of opening a gap on both sides of the greenhouse when watering or ventilating in the morning.
3. Scientific medication
If phytotoxicity occurs, cucumber leaves will dry up and turn yellow. It can be treated with brassinolide and high-quality foliar fertilizer, and it is better to use it twice every three to four days. If the drug damage is serious, it is necessary to remove the drug-damaged leaves in time to avoid the occurrence of diseases.
Cultivation and management methods of cucumber
1, check the house and tie the vine
In the process of cultivating cucumber, chajia treatment should be carried out after planting, and a flower stand or herringbone stand should be built with bamboo or wooden poles, and then the vines of cucumber should be tied to the bracket in a figure of eight with a cloth belt, once every three knots, but not too tightly, so as to avoid cucumber damage and rot.
2. Trim and pinch the tip
Cucumber grows faster, too little pruning will make it grow white and affect flowering and fruiting. During the cultivation period, the side branches on the main bearing vines should be cut off, two leaves on the side branches should be kept, and the remaining branches and vines should be cut off. Moreover, after the cucumber sets fruit, the buds at the top of the fruiting vine should be pinched off to promote nutrient concentration.
3. Fertilizer and water management
Cucumber needs less water and has strong drought tolerance, so it can be managed without watering to avoid water accumulation and rot. However, in the continuous dry weather, cucumber should be watered regularly to keep the soil moist, and cucumber should be topdressing at seedling stage, early flowering stage and fruiting stage, mainly with organic fertilizer to promote plant growth.