Melon does not sit melon refers to watermelon plants do not sit watermelon, melon farmers often mistakenly believe that it is a variety of problems. In fact, there are many reasons why watermelons do not sit down:
First, the cultivation of technical measures caused by watermelon does not sit melon and prevention
1. Improper sowing date: The experiment showed that watermelons were planted in stages from July to July, showing that the later the sowing date, the higher the female flowering stage, especially from June to July. 2. Depression in the field: The density of watermelon is too large, the plant nutrition grows vigorously, and in the high-temperature, rainy, high-humidity season, the leaves overlap each other to make the plants inter-planted. 3. Poor nutritional status and partial application of nitrogen fertilizer: nitrogen, phosphorus, potassium, calcium and organic fertilizer and inorganic fertilizer with the proportion of inappropriate, insufficient supply of nutrients or nutrition. 4. Inappropriate management of fertilizer and water: watering of watermelon and top-dressing and watering before sitting on the melon, make the water and fertilizer metabolism of the plant excessively prosperous, and the nutrient grows vigorously to produce falling flowers. 5. Spraying pesticides during flowering period: Spraying pesticides during flowering period affects pollinator insect activity or killing vector insects, resulting in failure of normal watermelon pollination and flowering.
Second, the environmental factors caused by the lack of melon and prevention 1. High temperature and drought: due to extreme drought during flowering caused male flower dysplasia, no pollen or pollen dysplasia, can not be normal fertilization. 2. Flowering at low temperature: The low temperature during the flowering of watermelon will cause pollen abortion or flowering, and will affect the activity of vector insects. 3. Flowering rainy days: Insects in cloudy and rainy days are weakened or unable to pollinate due to lack of activity. The rain falls on the anthers of male flowers and female stigmas. 4. Dust and strong sunlight: Dust and strong sunlight can cause mechanical damage and burns, resulting in falling flowers or melons that do not sit well.
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