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脱毒甘薯适应性广、抗性强、产量高、品质好,一般每667平方米增产30%左右。实现脱毒春甘薯丰产稳产要抓好以下几点:1.平衡施肥,起垄栽培施肥应做到前期肥效快,秧苗早发;中期肥效稳,壮而不旺;后期肥效长,植株不早衰。高产田一般应667平方米施有机肥4000千克以上,尿素10千克,磷酸二铵20千克,硫酸钾25千克。施肥方法宜在作垄时条施为宜。起垄时要做到垄形肥胖,垄沟窄深,垄面平,垄土踏实,无大垡和硬心。
Detoxification sweet potato wide adaptability, resistance, high yield, good quality, generally an increase of 30% per 667 square meters. Achieve the virus-free sweet potato high yield to grasp the following points: 1. Balanced fertilization, ridge cultivation and fertilization should be fast early effect, seedlings early hair; medium-term fertilizer effect is stable, strong and not prosperous; late fertilizer effect, the plant does not premature . High-yield fields generally should be applied organic fertilizer 667 square meters 4000 kilograms, urea 10 kilograms, 20 kilograms of diammonium phosphate, 25 kilograms of potassium sulfate. Fertilization methods should be appropriate when ridge. Ridge to be ridge-shaped obesity, furrows narrow and narrow, flat ridge, ridge soil practical, non-tyrant and hard heart.