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Growing Environment and Variety Selection for Mini Sweet Potatoes

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1. Environment selection: Select the planting site according to the environmental conditions standard for pollution-free food - vegetable production areas. At the same time, the soil is required to be loose newly opened red or yellow soil or sandy paddy-upland rotation land, with acidic soil. 2. Variety selection 2.1 Jinyu (formerly Zhe 1257). Bred by the Zhejiang Academy of Agricultural Sciences, skin color pink, flesh color pure yellow, tuberous roots short and round, smooth skin, taste mealy, sweet, and glutinous, fine texture, no coarse fiber (strings), rich aroma, drying rate 30%-32%, 5-7 tuberous roots per plant, uniform tuberous root size, good early maturity, can be harvested in about 110 d (days), suitable for planting in different seasons, marketable tuberous root rate can reach 85%, small tubers below 50 g also have distinctive features and are suitable for hotel and restaurant consumption. This variety emerges well, drought tolerance is average, the main disadvantage is susceptibility to vine cutting disease, effective disease avoidance measures are selecting disease-free seed tubers, high vine cutting, and avoiding continuous cropping, paddy-upland rotation has a better control effect. 2.2 Liangyuan (formerly ais). Introduced variety from abroad. Skin color golden yellow, flesh color red, tuberous roots round, skin relatively smooth, taste soft, sweet, and glutinous, excellent quality, rich aroma; drying rate 25%-26%, suitable for steaming or roasting, 5-6 tuberous roots per plant, uniform tuberous root size. Good emergence, medium maturity, growth period about 130 d (days). 2.3 Xinxiang. A new variety bred by the Zhejiang Academy of Agricultural Sciences. Purple-red skin and yellow flesh, tuberous roots oval, skin relatively smooth, taste relatively mealy, fine texture, relatively sweet, drying rate 27%-29%. Underground tuberous roots are shallow and concentrated, suitable for mechanized harvesting, 6-7 tuberous roots per plant, uniform tuberous root size. This variety has good early maturity and high yield, when cultivated with plastic film mulching from late April to early May, it can be harvested in 90 d (days), yield and maturity are comparable to the high-yielding variety Sushu No. 8, and it can be planted for two seasons a year in Zhejiang Province. 2.4 Zheshu 6025. Purple-red skin and orange-red flesh, tuberous roots oval, skin relatively smooth, when just harvested, taste mealy, after storage (November), starch continuously degrades; taste relatively soft, glutinous, and sweet, good flavor, better to supply the market starting in November, a small amount of coarse fiber at both ends, drying rate 28%-32%. 5-7 tuberous roots per plant, good emergence, aboveground part semi-erect, vigorous growth, dark green leaf color, medium vine, medium maturity, growth period more than 120 d (days), better planted in early to mid-June. 2.5 Zheshu 78. Red skin and orange-red flesh, tuberous roots round, skin relatively smooth, taste soft, sweet, and glutinous, a small amount of coarse fiber at both ends, relatively good flavor, drying rate 25%-26%, good early maturity, suitable for early planting and early harvest, quality declines if harvested after October.

1. Environment selection: Select the planting site according to the environmental conditions standard for pollution-free food - vegetable production areas. At the same time, the soil is required to be loose newly opened red or yellow soil or sandy paddy-upland rotation land, with acidic soil.

2. Variety selection 2.1 Jinyu (formerly Zhe 1257). Bred by the Zhejiang Academy of Agricultural Sciences, skin color pink, flesh color pure yellow, tuberous roots short and round, smooth skin, taste mealy, sweet, and glutinous, fine texture, no coarse fiber (strings), rich aroma, drying rate 30%-32%, 5-7 tuberous roots per plant, uniform tuberous root size, good early maturity, can be harvested in about 110 d (days), suitable for planting in different seasons, marketable tuberous root rate can reach 85%, small tubers below 50 g also have distinctive features and are suitable for hotel and restaurant consumption. This variety emerges well, drought tolerance is average, the main disadvantage is susceptibility to vine cutting disease, effective disease avoidance measures are selecting disease-free seed tubers, high vine cutting, and avoiding continuous cropping, paddy-upland rotation has a better control effect. 2.2 Liangyuan (formerly ais). Introduced variety from abroad. Skin color golden yellow, flesh color red, tuberous roots round, skin relatively smooth, taste soft, sweet, and glutinous, excellent quality, rich aroma; drying rate 25%-26%, suitable for steaming or roasting, 5-6 tuberous roots per plant, uniform tuberous root size. Good emergence, medium maturity, growth period about 130 d (days). 2.3 Xinxiang. A new variety bred by the Zhejiang Academy of Agricultural Sciences. Purple-red skin and yellow flesh, tuberous roots oval, skin relatively smooth, taste relatively mealy, fine texture, relatively sweet, drying rate 27%-29%. Underground tuberous roots are shallow and concentrated, suitable for mechanized harvesting, 6-7 tuberous roots per plant, uniform tuberous root size. This variety has good early maturity and high yield, when cultivated with plastic film mulching from late April to early May, it can be harvested in 90 d (days), yield and maturity are comparable to the high-yielding variety Sushu No. 8, and it can be planted for two seasons a year in Zhejiang Province. 2.4 Zheshu 6025. Purple-red skin and orange-red flesh, tuberous roots oval, skin relatively smooth, when just harvested, taste mealy, after storage (November), starch continuously degrades; taste relatively soft, glutinous, and sweet, good flavor, better to supply the market starting in November, a small amount of coarse fiber at both ends, drying rate 28%-32%. 5-7 tuberous roots per plant, good emergence, aboveground part semi-erect, vigorous growth, dark green leaf color, medium vine, medium maturity, growth period more than 120 d (days), better planted in early to mid-June. 2.5 Zheshu 78. Red skin and orange-red flesh, tuberous roots round, skin relatively smooth, taste soft, sweet, and glutinous, a small amount of coarse fiber at both ends, relatively good flavor, drying rate 25%-26%, good early maturity, suitable for early planting and early harvest, quality declines if harvested after October.

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