Melo can be divided into four birth periods. From the water swelling of the seeds to the cotyledon flattening to the germination stage; the cotyledon flattening to 5 true leaves as the seedling stage, during which the root system grows vigorously, the flower buds differentiate and form; from the 5 leaf stage to the first female flower blossom to extend the bud stage During this period, the underground and aboveground areas all thrive, and the flower grows and matures. From the flowering of the female flower to the ripening of the fruit to the melon period, the vegetative growth of this period changes from vigorous to slow, and the reproductive growth enters vigorous growth. The melon period is divided into the fruit setting period, the expansion period and the maturity period. Fruit settling to the fruit's "sweeping hair" only indicates that the fruit has been stable, the fruit is about the size of the egg, and the fruit-faced hairs have begun to recede; from the fruit "sweeping" to "scheduled" to the swelling period, it is the fruit's volume increase. Fast period; from fruit "set" to full maturation to maturity, during this period the material in the pulp is transformed, the peel has a color, the flesh has a sweet taste and aroma.
Melon on the temperature requirements, temperature 30 °C, ground temperature 20 °C, temperature 25 ~ 30 °C, night temperature 15 ~ 20 °C for the development of the optimum temperature. Muskmelon is sensitive to low temperatures, and its fertility is stagnant at 13°C. The melons enjoy ample sunshine and short days can promote the formation of female flowers. Requirements of low air humidity, generally 50% to 60% suitable, it has strong drought tolerance, extremely resistant to earthworms, soil moisture, easy to cause root suffocation, and easy to disease. The melons enjoy good permeability in sandy loam.
(1) Fertilize melon in open field. Melon requires continuous supply of nitrogen, phosphorus and potash during the growing season. The ratio of nitrogen, phosphorus and potassium absorption is about 2:1:3.7. For every 1000 kg of melon produced, 2.5 to 3.5 kg of nitrogen, 1.3 to 1.7 kg of phosphorus, and 4.4 to 6.8 kg of potassium are needed. The maximum amount of fertilizer was absorbed during the result period. The absorption peak of nitrogen and potassium fertilizers is 16 to 17 days after sitting melon, and the absorption peak of phosphate fertilizer is slightly later. The excessive application of nitrogen at the early stage of fertility will cause the melon to grow. When the fruit is near maturity, nitrogen will be applied too much, which will affect the increase of sugar content. Therefore, the nitrogen fertilizer should be mainly long-acting and slow-effect fertilizer. Phosphate fertilizer and potash fertilizer play an important role in promoting fruit quality and early maturation. Phosphorus and potassium fertilizers should be added during the fruiting period. Melon is sensitive to calcium, magnesium, boron and other elements and should be applied as appropriate. In continuous protection, the application of trace elements should be considered. The types of fertilizers should be dominated by high-quality organic fertilizers rich in phosphorus and potassium, such as oil cake fertilizers, fish fertilizers, human feces, and chicken and duck dung. Basal-based, more rain in the south, to prevent leaching can increase the proportion of top-dressing.
Melon on the temperature requirements, temperature 30 °C, ground temperature 20 °C, temperature 25 ~ 30 °C, night temperature 15 ~ 20 °C for the development of the optimum temperature. Muskmelon is sensitive to low temperatures, and its fertility is stagnant at 13°C. The melons enjoy ample sunshine and short days can promote the formation of female flowers. Requirements of low air humidity, generally 50% to 60% suitable, it has strong drought tolerance, extremely resistant to earthworms, soil moisture, easy to cause root suffocation, and easy to disease. The melons enjoy good permeability in sandy loam.
(1) Fertilize melon in open field. Melon requires continuous supply of nitrogen, phosphorus and potash during the growing season. The ratio of nitrogen, phosphorus and potassium absorption is about 2:1:3.7. For every 1000 kg of melon produced, 2.5 to 3.5 kg of nitrogen, 1.3 to 1.7 kg of phosphorus, and 4.4 to 6.8 kg of potassium are needed. The maximum amount of fertilizer was absorbed during the result period. The absorption peak of nitrogen and potassium fertilizers is 16 to 17 days after sitting melon, and the absorption peak of phosphate fertilizer is slightly later. The excessive application of nitrogen at the early stage of fertility will cause the melon to grow. When the fruit is near maturity, nitrogen will be applied too much, which will affect the increase of sugar content. Therefore, the nitrogen fertilizer should be mainly long-acting and slow-effect fertilizer. Phosphate fertilizer and potash fertilizer play an important role in promoting fruit quality and early maturation. Phosphorus and potassium fertilizers should be added during the fruiting period. Melon is sensitive to calcium, magnesium, boron and other elements and should be applied as appropriate. In continuous protection, the application of trace elements should be considered. The types of fertilizers should be dominated by high-quality organic fertilizers rich in phosphorus and potassium, such as oil cake fertilizers, fish fertilizers, human feces, and chicken and duck dung. Basal-based, more rain in the south, to prevent leaching can increase the proportion of top-dressing.
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