How the leaves of cantaloupe turn yellow? how to prune and pick the heart of cantaloupe

Melon is a kind of popular fruit, but also a cash crop that many people will choose to grow now. It is cultivated in many places in China at present. However, in the process of planting cantaloupe, there may also be some yellowing of leaves, so how should we solve this situation?

What happened to yellow leaves?

1. Supplement trace elements. The most common reason for the yellowing of melon leaves is the lack of chlorophyll, and the main reason for the lack of chlorophyll in melon is the trace elements such as magnesium, nitrogen, iron and zinc in the soil. At this time, it is necessary to apply topdressing in time, and it is best to apply some effective compound fertilizers. In addition, sometimes the lack of trace elements in the soil has a great relationship with the salinization of Gui sanctions. If the melon leaves appear yellow in that year, it is recommended to plant them in the second year.

2. Foliar fertilizer can be sprayed. Melon leaves yellow is mostly caused by lack of chlorophyll, then you can spray some foliar fertilizer, it is best to spray some chlorophyll content master fertilizer, and in the spraying foliar fertilizer, but also to apply some fertilizer containing nitrogen, phosphorus and potassium.

3, yellow leaves can be treated with drugs. Cantaloupe leaves yellow may also be caused by bacterial leaf blight, people often call it bacterial leaf spot disease, this disease occurs, spread quickly, should be treated with drugs in a timely manner. After seeing a small amount of yellow leaves, it should be treated in time with streptavidin or neophytomycin, but these drugs should not be mixed as much as possible. The treatment effect on bacterial leaf spot of melon will be more obvious when used alone.

How to clean up cantaloupes

1. When the melon grows to 3-5 leaves, it should be picked and pruned. General use of "vine" and "vine" knot melon way, so that melon can continue to supply the market.

2. After cantaloupe planting, when the main vine has 4-5 leaves, it shall be topped and picked in time. After the seed vine occurs, 2-3 healthy seed vines shall be selected and other weak seed vines shall be cut off.

3. When the seed vine to be selected has 5-6 leaves, remove the heart again, select 3 vines on the seed vine, and cut off other weak vines.

4. After the vine sits on the melon, leave 2 leaves from the melon and pick the heart. Pay attention to removing the abnormal melon. Distribute the seed vine and grandson vine evenly, and press soil on the seed vine. Old leaves and diseased leaves were cut off and taken out of the field.

Cantaloupe is not sweet what to do

1. The temperature difference between day and night is small. The greenhouse planting method can be used to reduce ventilation during the day to increase the room temperature of the greenhouse, which is conducive to the synthesis of sucrose, while strengthening ventilation at night to reduce the room temperature and artificially create an environment with a large temperature difference between day and night.

2. Improper management of fertilizer and water. In fertilization should pay attention to reasonable collocation, can not be biased towards one of them, calcium deficiency in the soil easy to form fermented melon, resulting in fruit is not sweet, so try to apply organic fertilizer with nitrogen, phosphorus and potassium fertilizer, harvest half a month before the best do not water fertilization.

Common diseases of muskmelon and their control

1. Downy mildew, spray with 800 times solution of 72% Kelu wettable powder, 250~300 times solution of 40% ethyl phosphorus aluminum wettable powder, or 600 times solution of 75% chlorothalonil wettable powder.

2, stem blight, with 70% manganese zinc wettable powder 500 times solution, or 75% chlorothalonil wettable powder 600 times solution spray.

3. For virus disease, spray 500 times solution of 20% virus-A wettable powder, 1000 times solution of 1.5% Zhibingling emulsion, or 300~500 times solution of 5% virus-clearing agent once every 10 days for 3~4 times continuously.

4. Powdery mildew can be sprayed with 15% triadimefon wettable powder 1000~1500 times solution or 12.5% myclobutanil EC 4000 times solution every 15~20 days.

Melon leaves yellow, generally because of diseases or soil and other reasons caused by careful observation, and then from the root cause to find out the problem and then solve. Cantaloupe is also very important when planting, usually at the beginning of the three leaves can be implemented, so as to ensure that cantaloupe grows better.