Summer is a season of large demand for cucumbers. Many farmers also grow cucumbers. However, the recent reaction of farmers has always been a phenomenon of melons, especially in autumn and winter. So what are the symptoms after the cucumber is long? How to prevent it?

First, the symptoms

1. The stem is slender, the stem section is long, the leaf is large and thin, and the seedling is generally yellowish green.

2, the stem is thick, long joints, poor root development, large leaves, thick, dark green.

Second, prevention measures

For the first case:

1. Reduce the temperature. The temperature of the shed is high at night, and the temperature inside the shed should be appropriately reduced.

2. Increase the light intensity. If the light is weakened, especially in the case of rainy days, it is easy to appear.

(1) Pay attention to supplementing the light and try to reveal the light;

(2) Regularly clean the shed film to enhance light transmission and enhance light;

(3) artificially add light, set up plant growth lights in the shed, turn on the lights when the sky is cloudy;

(4) Foliar application of potassium dihydrogen phosphate solution or promotion of photosynthesis regulators.

3. Reduce the humidity in the shed. Excessive humidity can also cause longevity. Control the soil moisture, keep the soil dry and dry, not too wet.

4. Control the cultivation density. Appropriately dilute planting, foliar spray application of auxin-like regulators, preferably spraying ethephon or micro-fertilizer containing various trace elements in the true leaf stage of cucumber stalks, promoting reproductive growth, increasing the number of female flowers, and controlling plants Growth, balance vegetative growth and reproductive growth.

For the second case:

1. Reduce the temperature. The suitable temperature for the growth of cucumber is 25 ° C - 30 ° C. When the temperature exceeds 30 ° C, the plant will grow faster and longer. Therefore, the greenhouse temperature should be controlled between 25 ° C and 30 ° C during the day and 18 ° C at night.

2. Reduce humidity. The suitable air humidity for cucumber development is 60%-80%. When the humidity in the shed exceeds 85%, it should be ventilated and drained immediately, or the ground should be covered with straw to reduce the humidity and prevent the length.

3. Control watering. Before the squash, the cultivating is mainly based on cultivating and cultivating, so that it can be seen and dried; the cascading period is the peak period of water demand, and the water should be poured every 7-10 days. The watering should be carried out before picking the melon to control the length; After the upper cucumber is harvested, the watering is properly controlled to promote the occurrence of new roots. When the melon is swollen, water it again.

4. Control fertilization. Under the premise of ensuring soil nitrogen supply, appropriate application of phosphate fertilizer, potassium fertilizer, and medium and trace element fertilizers containing boron and iron. Topdressing should be in liquid form, combined with watering, with water and fertilizer.

5, the first batch of melons and melons, less melons. After the cucumber is sitting in the root melon, the vegetative growth of the plant is inhibited. At this time, the hormones such as melon and anti-fallin can be sprayed during the flowering and meloning period to reduce the melon, promote the rapid expansion of the melon, prevent the cucumber from growing, and increase the early stage. Yield.

The above is the symptoms and prevention measures of the autumn and winter 茬 cucumber seedlings long, many farmers think that cucumber seedlings are long and good is a good thing, but in fact, the melon seedlings will cause cucumber to reduce production, we must prevent it in time, I hope the above can help you.

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