Boron deficiency due to lack of boron. Radish Hollow affects its food value and quality, and many vegetable farmers cannot find the reason for the radish hollow. Actually, radish hollow is caused by the lack of boron in the soil. The following methods can be applied to apply boron fertilizer to prevent radish hollow:
1, when the base fertilizer is sown, use 17% of boric acid 300g or 11% of borax 500g, mix in 5 ~ 10 kg of dry fine soil, fully mix and sieve again, and then apply basal fertilizer into the seed ditch or Kind of hole. The radish seeds can also be mixed into dry fine soil mixed with boron fertilizer, and the mixture is thoroughly mixed and sprinkled into the seed grooves and seed holes.
2. Add 3 to 5 kg of fine soil and add water and mix the boron fertilizer with the amount of 300 grams of boric acid per acre or 500 grams of borax per acre. Stir together a thin paste, then pour the radish seeds and some dry fine soil. The soil containing the boron fertilizer is adhered to the surface of the seed by hand to make a seed coat, and the seed and the seed can be used for seeding until they can be separated.
3, boron boron fertilizer can promote radish a big heart. From the radish sprouts grow 2 to 3 true leaves from the beginning to the first half of harvest, spraying once every 20 days with boron fertilizer, 150 grams of borax or 100 grams of boric acid per acre, first dissolved in a small amount of warm water, Water 60 to 75 kg evenly sprayed, spray time is appropriate in the evening.
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