What to do if cucumber grows in winter after planting

Recently, the author found that due to improper cultivation and management measures of some vegetable farmers, the phenomenon of overwintering cucumber plants after planting is very common. If correct management measures are not taken, the yield will be greatly affected.

1. The performance of cucumber plant lengthening

Cucumber plants are characterized by thin stems, long internodes, large and thin leaves, light leaf color, slender petioles and small angles with the stems, small and pointed crowns, and few seedlings.

2. The cause of the leggy

1. Not enough water for planting. After planting, the first water was not watered enough, and most greenhouses were supplemented with the second water. At this time, the roots of cucumber have not yet been seated, and the plant has not changed from vegetative growth to reproductive growth. Early watering will inevitably lead to excessive vegetative growth and excessive growth.

2. The ventilation and cooling are not timely, and the temperature inside the shed is too high. After planting the slow seedlings, ventilation and cooling were not carried out in time, which made the temperature in the shed too high, especially at night, which caused the plants to grow excessively.

3. After watering, the soil was not tilled and loosened in time. After watering, the soil moisture is high, and if the soil is not plowed and loosened in time, it will affect the permeability of the soil and the respiration of the roots, which is not conducive to the rooting down, thus affecting the development of the root system.

Third, the adverse effects caused by the leggy plant

1. Poor root development: the plant grows too vigorously, and the growth of the above-ground and underground parts is not balanced, resulting in small vigorous roots, shallow root system, and failure to develop a huge root group.

2. Affecting flowering and sitting melon: If the plant grows too vigorously, flowering and melon sitting will be delayed, or the stems are thin and the flowers are weak, and the stalks are thick and the melons are few.

3. Reduced plant disease resistance and stress resistance: shallow roots are susceptible to disease. Due to the shallow root system of the leggy plant, the ability to absorb water and fertilizer is weak, the dry matter accumulation of the stems and leaves of the plant is small, the cell solution concentration is low, the outside of the plant is strong and the inside is weak, which reduces disease resistance and stress resistance. In particular, the cold resistance of the greenhouse leggy plants was significantly reduced.

4. Plants are prone to premature senescence and lower yield: due to excessive growth of plants in the early stage and excessive vegetative growth, they will inevitably affect reproductive growth and the nutrient accumulation of products, resulting in premature plant senescence and lower yield.

4. Management measures to be taken

1. Water enough planting water but not too much: it is enough if the planting water is not too high. Why are there not enough planting water in many greenhouses currently in production? The reasons are: first, some did not adopt small high-border cultivation; second, although small high-border cultivation was adopted, the height of the border was not enough.

2. After watering, disperse the moisture for a period of time, and then cover the mulch: After planting water, usually 3-4 days, when the topsoil is slightly dry, perform shallow intertillage, the purpose is to remove moisture, reduce soil moisture, and reduce compaction. Increasing the oxygen content of the soil is conducive to root respiration and growth. Under normal circumstances, it can be covered with mulch in about 7 days. For heavy soil, wait 13-14 days before mulching.

3. Shallow field tillage 4-5 times: After the planting water is poured, the main management measure is to carry out shallow field tillage, which requires diligent and fine tillage. Cultivation loosening soil can cut off the soil capillary to prevent the moisture in the soil capillary from rising to the surface, reduce the large amount of water evaporation, and reduce the air humidity in the shed; the second is to form a dry and wet soil environment to promote deep rooting; It can improve the permeability of the soil and increase the oxygen content of the soil, which is conducive to the respiration and growth of the root system. Fourth, it can break the slabs and join the cracks, which can not only control the transpiration of groundwater to take away heat, but also protect the moisture, heat, cold and seedlings. In general, through repeated cultivation, the ground temperature can be increased, soil ventilation can be enhanced, soil moisture can be maintained, root growth environment can be improved, root development can be promoted, cold roots and retting roots can be prevented, and deep roots can be grown and flower buds can be differentiated in large numbers. , The purpose of the root melon sitting firmly.

4. Lower the night temperature and widen the temperature difference between day and night: the suitable growth temperature for cucumbers after planting is 10℃-30℃. If the temperature is too high, the respiration will increase, the body will run disorderly, causing leggy growth, and at the same time, it will inhibit the growth of young fruit. Production declines. In a suitable temperature range, the larger day-night temperature difference is more vigorous than the small temperature difference-controlled plants, the growth potential is strong, and the early yield is significantly improved. Four-stage temperature management can be adopted. The morning is the most important stage of photosynthesis in the day. The temperature should be controlled at 26℃-30℃; the light in the afternoon is weakened. In order to connect with the night temperature, the temperature should be controlled at 20℃- 24℃ is appropriate; in the first half of the night, to promote the transportation of photosynthesis, the temperature is controlled at 15℃-19℃; in the second half of the night, to inhibit respiration, reduce nutrient consumption, and increase body accumulation, the temperature is controlled at 10℃-12℃.

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