Virus-free Yushu 7
The characteristic top leaf is purple, the leaf shape is light, the stem color is green with purple, the potato skin is purple, the potato flesh is white, resistant to barren, drought resistance and wide adaptability. The starch rate is high, the average starch rate is as high as 22.61%, the sprouting is fast, the storability is good, and the growth potential is strong. The starch rate of spring potato is about 24%, and that of summer potato is 3% higher than that of Xushu 18. The yield of fresh, dried potato and starch is 6.1%, 17% and 21.4% higher than that of Xushu 18, respectively, and the yield of virus-free potato is more than 20% higher than that of non-virus-free potato. The yield per mu of spring potato is more than 3000 kg and that of summer potato is more than 2000 kg. The disadvantage is that it is not resistant to root rot.
Virus-free Yushu 7 was selected in non-root rot disease area in suitable planting area.
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Reasonable selection of sowing time for wheat
The suitable sowing time of wheat generally means that it is suitable for sowing when the average temperature of day and night drops steadily to 18-15 ℃ in autumn. Within this range, semi-winter varieties are sown first, and spring varieties are sown later. The natural conditions such as suitable temperature and light in autumn and winter can be used to form strong seedlings before winter, which is beneficial to safely overwintering and improve the panicle rate of tillers and grain weight. It is now a critical time for wheat sowing, and wheat has been sown from north to south in the province. According to the sowing time requirements of different regions and different types of wheat varieties, and aiming at the problem of wheat sowing at the right time, which is generally concerned by farmers, this paper puts forward
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Lianmai 2
Lianmai No. 2 was selected by the Academy of Agricultural Sciences of Lianyungang City, Jiangsu Province, and passed the national examination and approval number: 2005004 in 2005. The variety belongs to the semi-winter multi-spike type mid-maturity line, the seedlings are semi-creeping, the leaves are slender and green. The tillering ability is strong, the panicle rate is high, and get up early in spring. The plant type is compact, the ear layer is neat, and the flag leaf is flushed up. The plant height is about 80 cm, the stem is elastic and resistant to lodging. Strong cold resistance, good fruiting, about 400000 ears per mu, 35 grains per ear, and 40 grams of 1000-grain weight
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