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2, topdressing: use 0.5 kg of borax per acre to mix 10-15 kg of fine dry soil, carry out soil topdressing in cotton seedling stage, or mix with chemical fertilizer evenly, and ditch or dig a hole 7-10 cm away from cotton seedlings. Give it down.
3. Manual spraying: use 0.2% borax aqueous solution or 0.1% boric acid aqueous solution in the cotton bud stage, spray once in the initial flowering stage and flowering and ringing period, and the spray volume is 50-80 kg per acre.
Hua County: Yue Xiuli
Cotton using boron fertilizer technology
1. Base fertilizer: use 0.5 kg of borax per acre to mix 10-15 kg of fine soil. Before planting, ditch the strip or apply the hole to the soil. Do not let the boron fertilizer contact the seed. Do not apply excessive amount of boron fertilizer to avoid wasting fertilizer. And prevent excessive poisoning.
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