Sushu No. 7
Su Shu 7 (Xu 54Mui 1) was bred by Jiangsu Xuzhou Sweet Potato Research Center in 1996 with Jishu 10 as female parent and ais0122-2 as male parent. The results of 33 experiments from 1992 to 1996 showed that the average yield per mu was 2181.4 kg, which was 18.2% higher than that of Xushu 18 and 15.5% higher than that of Xushu 18. Yield of fresh potatoes per mu is 2300 kg-2500 kg.
Characteristics: top leaf green, leaf heart-shaped, leaf vein purple, stem color green with purple; long vine, 5-7 branches, strong growth potential; potato skin red, smooth, potato meat white, potato spindle shape, dry rate 29.9%; tuber neat, the number of tubers per plant is 4-5, the tuber rate is high, the tuber expands quickly, the stamina is big; the sprouting is good, the seedling is fast and more, the potato seedling is robust, and the seedling yield is large. High resistance to root rot, stem nematode disease, susceptible to black spot, strong early tolerance.
Key points of cultivation: cultivate strong seedlings of appropriate age, control the amount of seed discharge at about 18 kg / m2, plant mature seedlings into the nursery in time, apply fertilizer reasonably, cooperate with basic nitrogen and phosphorus fertilizer, control topdressing and prevent prosperous growth, and be suitable for early planting in mountainous areas. plain depressions should do a good job of field drainage to drain waterlogging and dewaterlogging; suitable for planting in areas of root rot and stem nematode.
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Aixianzhan, a New Conventional Rice Variety
Aixianzhan, a new conventional rice variety with good quality and high yield for both early and late season, was bred by crossing Yueyezhan 21/Yuanxianzhan. It was identified as the first class rice of national standard by physical and chemical analysis by Food Quality Supervision and Inspection Center of Ministry of Agriculture (Wuhan), breaking through the zero record of the first class rice variety of national standard quality in our province. It is reported that this variety is early-maturing, late-maturing, temperature-sensitive indica rice. In 2002, late-cropping rice was tested in provinces and regions. The average yield per mu was 383.29 kg, which was 3.54 kg higher than that of CK japonica rice 89
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The wheat harvest at the end of wax ripening is of high quality and high yield.
In recent years, researchers have studied the grain filling rate of many wheat varieties, and the 1000-grain weight is the maximum at the end of wheat wax ripening. After 3 days of harvest, the average daily weight per 1000-grain weight decreased by 0.3-9.4 g, while that per 1000-grain weight decreased by 1-1.2 g per day from the 4th to 5th day. If it is calculated according to 350000 ~ 400000 ears per mu and 35 grains per panicle, the yield will be reduced by 1315kg per mu when the 1000-grain weight is reduced by 1g. The results show that the harvest of wheat is the most suitable at the end of wax ripening, because the stems and leaves of wheat are in the milk stage.
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