Watermelon sweetness is not high, in addition to the factors of watermelon varieties, but also with the improper management of the cultivation process, such as the application of organic fertilizer, especially partial nitrogen fertilizer, do not pay attention to the appropriate mix of phosphorus and potassium fertilizers. In addition to the selection of sweet watermelon varieties, to improve the sweetness of watermelon, the following methods can be used:
The application of organic fertilizer in general Mushi fermented organic fertilizer 2500-3000 kg and 100 kg of cooked cake fertilizer as base fertilizer. Before the ploughing of the watermelon field is applied, and then the land is ploughed.
Potassium fertilizer is generally applied to 7-8 kg of potassium fertilizer (without nitrogen) as base fertilizer; in the melon period, 4-5 kg ​​of potash fertilizer is applied; in the initial stage of watermelon melon, 0.3% potassium dihydrogen phosphate is sprayed continuously, or per acre. Phosphate fertilizer 25-30 kg, or more cooked chicken manure and ash.
The application of boron fertilizer to watermelon borax borax watermelon field can effectively prevent the occurrence of excessively thick and hollow phenomenon of watermelon rind, and also has obvious effects of increasing production, thin skin and sweet meat. Generally 100 grams of borax per acre, first use a small amount of hot water to dissolve the borax, then add 50 kg of fresh water, spray 1-2 times before the flowering of watermelon, spray once every 7-10 days, also can be poured with boron per hole Liquid 1-1.5 kg, the effect is better.
Spraying Zengjiangling watermelon during the expansion period, spraying 200-400ppm of Zengtangling on the leaves of the plants can increase sugar yield and yield of watermelon.
The application of organic fertilizer in general Mushi fermented organic fertilizer 2500-3000 kg and 100 kg of cooked cake fertilizer as base fertilizer. Before the ploughing of the watermelon field is applied, and then the land is ploughed.
Potassium fertilizer is generally applied to 7-8 kg of potassium fertilizer (without nitrogen) as base fertilizer; in the melon period, 4-5 kg ​​of potash fertilizer is applied; in the initial stage of watermelon melon, 0.3% potassium dihydrogen phosphate is sprayed continuously, or per acre. Phosphate fertilizer 25-30 kg, or more cooked chicken manure and ash.
The application of boron fertilizer to watermelon borax borax watermelon field can effectively prevent the occurrence of excessively thick and hollow phenomenon of watermelon rind, and also has obvious effects of increasing production, thin skin and sweet meat. Generally 100 grams of borax per acre, first use a small amount of hot water to dissolve the borax, then add 50 kg of fresh water, spray 1-2 times before the flowering of watermelon, spray once every 7-10 days, also can be poured with boron per hole Liquid 1-1.5 kg, the effect is better.
Spraying Zengjiangling watermelon during the expansion period, spraying 200-400ppm of Zengtangling on the leaves of the plants can increase sugar yield and yield of watermelon.
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