It is now the season for melons to be marketed in large quantities, but many vegetable farmers have recently reacted to melon cracking. The production and quality of melons have been affected, causing serious economic losses.
cause
Variety reasons: Some melon varieties have the characteristics of thin skin and crisp skin. When the growth process is greatly affected by the external environment, it is easy to cause the phenomenon of split melon.
Improper temperature management: When the melon plant transitions from vegetative growth to reproductive growth, the climatic environment outside the shed changes suddenly, causing a melon split phenomenon. In the late growth period, the ventilation is too late, the ventilation opening is too large, and the temperature changes quickly, which also easily causes the melon skin to become brittle.
Deficiency: melons lack medium and trace elements during the growth process, and trace elements such as calcium and boron in the soil are lacking.
Humidity effect: Before the opening of the thin-skinned melon female flowers, some melon farmers over-controlled watering in the shed, and watered too much after sitting on the melon, so that the growth of the young melon's epidermis could not keep up with the growth of the flesh.
Improper fertilization: Excessive application of nitrogen, phosphorus, and potassium fertilizers during the fertilization process inhibits the absorption of trace elements such as boron and calcium, resulting in thinning of the peel cell wall, which is likely to cause melon cracking.
Improper use of hormones: When using hormone dipping flowers in the melon management process, excessive hormone concentration or repeated dipping of flowers will cause the aging of the fruit epidermis and affect the normal expansion of young melons to form cracked melons. If the swelling agent is used excessively, the fruit will rapidly expand and cause cracked melon.
Prevention
Select excellent varieties: According to the local environment and stubble, choose varieties with strong resistance to planting.
Scientific temperature control: When growing melons in greenhouses, try to keep the temperature in the greenhouse at 25℃-30℃ during the day and 8℃-20℃ at night.
Reasonable water and fertilizer management: water according to the principle of "seeing dry and seeing wet". Maintain sufficient water before sitting on the melon. Do not pour water after swelling. Fertilizer water should be poured 7-8 days after sitting on the melon. Fertilizer should be selected. Bio-organic rush fertilization, and then apply 1 kg of boron fertilizer per acre with water, and can also spray or rush calcium nitrate or fertile calcium during fruit expansion to promote fruit growth and prevent falling flowers and fruits. Try not to water or a small amount of water 7-10 days before picking.
Reasonable use of plant growth regulators: scientific use of plant hormones, when using hormones dipped in flowers, according to the dipping time and temperature, reasonable adjustment of the concentration of dipped anthers to avoid repeated dipping of flowers.
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