Watermelon sweetening article
Farmers also grow watermelons. Why do they plant watermelons with different degrees of sweetness?
The first thing to know is that the melons of watermelons are determined by the amount of sugar. High sugar content is sweet, while low sugar content is light. The amount of sugar is composed of three parts: fructose, sucrose and glucose. The sweetness of fructose is the highest, and the sweetness of glucose is the lowest.
The reasons for the difference in sweetness of watermelons are: first, the genetic basis of watermelon varieties is different; second, the maturity of watermelons is different; third, climate factors and soil texture are different; and fourth, the impact of cultivation and management. For example, the sugar content of watermelon varieties is only 5%-6%, while the sugar content of high sugar varieties can reach 12% or more.
In general, adequate light, large temperature difference between day and night, is conducive to the transformation of nutrients and accumulation of sugar; rain, low temperature and ultraviolet light, small temperature difference between day and night, the accumulation of sugar is less. The sandy soil warms up quickly, and it has strong fertility and water retention capacity. The accumulation of sugar in watermelons is more; in poor soils, there is insufficient nutrient growth and less sugar content. With the addition of organic matter, the sweetness of the application of phosphorus and potassium fertilizers increased greatly, partial application of nitrogen fertilizer, excessive nutrient growth, nutrient consumption, and sugar content decreased. Pruning is not timely and irrational also affects the content of sugar.
Therefore, through the analysis of the market's choice of watermelon sweetness and its causes, the following countermeasures should be taken for watermelon production in the future.
First, choose a variety with high sugar content. Divided into early, middle and late-maturing varieties.
Second, choose sandy soil. The roots of watermelons are well developed and are more tolerant to drought but less tolerant. To choose watermelons with good irrigation and drainage conditions, especially sandy loam soils with high potassium content, is beneficial to the accumulation of sugar in watermelons.
Third, optimize formula fertilization.
Fourth, adjust the proportion of melons and vines. The proportion of watermelon fruit and foliage is 4:1, and the excess vine leaves are removed in stages during the whole vine pupa process. Sanman pruning double-vine pruning and single vine pruning effect is good, high sugar content.
Fifth, harvest watermelons in batches at appropriate time. For watermelons with lower sweetness, sweeteners or sweetening spirits can also be sprayed 3 to 4 weeks before the harvest of watermelons, which can increase the sweetness by 0.5-0.8 degrees.
The first thing to know is that the melons of watermelons are determined by the amount of sugar. High sugar content is sweet, while low sugar content is light. The amount of sugar is composed of three parts: fructose, sucrose and glucose. The sweetness of fructose is the highest, and the sweetness of glucose is the lowest.
The reasons for the difference in sweetness of watermelons are: first, the genetic basis of watermelon varieties is different; second, the maturity of watermelons is different; third, climate factors and soil texture are different; and fourth, the impact of cultivation and management. For example, the sugar content of watermelon varieties is only 5%-6%, while the sugar content of high sugar varieties can reach 12% or more.
In general, adequate light, large temperature difference between day and night, is conducive to the transformation of nutrients and accumulation of sugar; rain, low temperature and ultraviolet light, small temperature difference between day and night, the accumulation of sugar is less. The sandy soil warms up quickly, and it has strong fertility and water retention capacity. The accumulation of sugar in watermelons is more; in poor soils, there is insufficient nutrient growth and less sugar content. With the addition of organic matter, the sweetness of the application of phosphorus and potassium fertilizers increased greatly, partial application of nitrogen fertilizer, excessive nutrient growth, nutrient consumption, and sugar content decreased. Pruning is not timely and irrational also affects the content of sugar.
Therefore, through the analysis of the market's choice of watermelon sweetness and its causes, the following countermeasures should be taken for watermelon production in the future.
First, choose a variety with high sugar content. Divided into early, middle and late-maturing varieties.
Second, choose sandy soil. The roots of watermelons are well developed and are more tolerant to drought but less tolerant. To choose watermelons with good irrigation and drainage conditions, especially sandy loam soils with high potassium content, is beneficial to the accumulation of sugar in watermelons.
Third, optimize formula fertilization.
Fourth, adjust the proportion of melons and vines. The proportion of watermelon fruit and foliage is 4:1, and the excess vine leaves are removed in stages during the whole vine pupa process. Sanman pruning double-vine pruning and single vine pruning effect is good, high sugar content.
Fifth, harvest watermelons in batches at appropriate time. For watermelons with lower sweetness, sweeteners or sweetening spirits can also be sprayed 3 to 4 weeks before the harvest of watermelons, which can increase the sweetness by 0.5-0.8 degrees.
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