Six spinach varieties suitable for summer sowing
The selection criteria for summer spinach varieties are: late summer sunshine, convulsions, strong heat resistance, and rapid growth. At present, the varieties cultivated throughout the country mainly include the following types:
1. All-round spinach
Introduced from Hong Kong. It is resistant to heat, cold, and has wide adaptability. It has strong winter and late bolting. It grows fast and can grow rapidly at temperatures of 3°C to 28°C. The plant stands upright, with a plant height of 30 to 35 cm, 7 to 9 leaves, and a mass of about 100 grams per plant. Dark green leaves, thick and large, smooth leaves, length 30 to 35 cm, width 10 to 15 cm. Less astringent, soft texture. 80 to 110 days of growth, resistance to downy mildew, anthrax, and viral diseases.
2. Hua Si No.1
A generation of hybrids selected by Huazhong Agricultural University. Premature, 40 to 60 days of growth, plant half-upright, plant height 30 cm. Ye Ji-shaped, with a deep lack of carved pair. The tip is blunt, the leaves are hypertrophic and the quality is good. High temperature, resistance to downy mildew and virus disease, high yield.
3. Guangdong round leaf spinach
Introduced from Guangdong, the seed has no thorns, leaves oval, strong heat resistance, fast growth, intolerable cold, before the cold comes.
4. Joint number one
A generation of hybrids developed by the Shanghai Agricultural College. The seeds are thorny, the plants are half open, the leaves are arrow-shaped, and the leaves are large and hypertrophic. They grow rapidly and are more resistant to high temperatures. They are sown in high temperatures and rainy seasons to produce seedlings and preserve seedlings. The seed has a long period of dormancy, and the germination rate of the new seed under direct high temperature is not high. 30 days after sowing can be harvested.
5. Spring and Autumn leaves
Introduced from Japan, Shanxi Province has robust plants, semi-vertical leaves, clusters of leaves, oblong leaves, blunt tips, and leaf hypertrophy. The mass per plant is 200 grams. The quality is tender, and the single leaf mass is 20 grams. There is no astringency. Excellent. Strong resistance to disease, heat resistance, convulsions later, the growth period is about 10 days longer than the general round-leaved spinach.
6. Pumping big leaves late
The new varieties selected by the vegetable research of Shanxi Agricultural University have grown for more than 50 days. Plant height 25 cm, degree of development 50 cm. The leaves are large, broadly arrow-shaped, with a round tip, 32 to 40 cm long, 14 to 18 cm wide, and very little fiber. The seed has no thorns. Convulsions are 15 to 20 days later than the general variety, and generally produce more than 2500 kg per mu.
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