Selenium-rich watermelon seedling raising matrix and method of producing organic selenium-rich watermelon by using same
A seedling raising substrate and watermelon technology, applied in the field of cultivation, can solve problems such as the need to improve the utilization rate of selenium fertilizer and heavy fertilization workload, and achieve the effect of avoiding later fertilization operations, reducing damage to seedlings, and promoting the improvement of selenium absorption efficiency
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Embodiment 1
[0030] The seedling substrate is made of soil, 3% humic acid, 8.88 mg / kg sodium sulfate, and 4.78 mg / kg sodium selenate. It is made into a seedling cup for seedling cultivation. With conventional planting operations, the selenium content of the selenium-enriched watermelon produced in the end is 3 μg / kg, and the organic selenium content is 98%.
Embodiment 2
[0032] The seedling substrate is evenly mixed with organic fertilizer, 5% humic acid, potassium sulfate content of 27.18 mg / kg, and sodium selenite content of 10.95 mg / kg, and is put into watermelon seedling trays for seedling cultivation. After transplanting, the selenium-enriched watermelon finally produced according to the conventional watermelon planting operation has a selenium content of 10 μg / kg and an organic selenium content of 98%.
Embodiment 3
[0034] The seedling substrate is made of soil, humic acid 10%, ammonium sulfate content of 123.75 mg / kg, and nano-selenium nutrients (15 mg / kg of selenium content) are evenly mixed to make seedling cups for seedling cultivation. After transplanting, follow the conventional watermelon planting operation, and finally produce selenium-enriched watermelon with a selenium content of 45 μg / kg and an organic selenium content of 96%.
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