How can wheat seed purity be improved? These methods are very practical
How can wheat seed purity be improved? Are there any methods? Please explain. The mixing and disorder of too many wheat varieties is the main obstacle restricting stable and high wheat yields. Improving the purity of wheat seed production and accelerating unified wheat propagation and supply are important measures for increasing yields. Adhere to one variety per village and uniformly replace varieties. Follow the path of specialized seed...
How can wheat seed purity be improved? Are there any methods? Please explain
The mixing and disorder of too many wheat varieties is the main obstacle restricting stable and high wheat yields. Improving the purity of wheat seed production and accelerating unified wheat propagation and supply are important measures for increasing yields.
Adhere to one variety per village and uniformly replace varieties. Follow the path of specialized seed production, implement one variety per village, one variety per area, or one variety per cooperative, and carry out a one-time unified replacement of varieties.
Do a good job in seed production in the spike-row nursery, spike-line nursery, and foundation seed field. Select base areas well according to supply and demand plans, arrange seed production for the two nursery fields, the foundation seed field, and the certified seed field, and match the nursery fields in a complete set to ensure the accuracy of spike selection and the thoroughness of roguing out off-types and inferior plants, so as to ensure that new seed is available every year.
Strengthen management and implement technical measures. Strengthen technical publicity and administrative management for seed bases, achieve unified planning, unified varieties, unified sowing, and unified roguing out off-types and inferior plants, eliminate free planting, and ensure that seeds are replaced year after year.
Rogue out off-types and inferior plants early, with emphasis on thoroughness. Roguing is carried out in two rounds. The first is at the full heading stage, when other plants mixed into the variety are pulled out according to the main traits of the variety, such as plant height, spike shape, spike color, and awn length. The second is at the dough stage, mainly to pull out any missed off-type plants, diseased plants, and inferior plants. Roguing should be done by pulling out the whole plant, not by clipping, to prevent missing off-type spikes below the spike layer.
Adhere to standards and carry out strict inspection and acceptance. After roguing is completed, the seed department should organize professional personnel to inspect and register field by field according to variety standards. For fields that do not meet the standards, technical personnel shall supervise and have the work redone until they meet the standards; for seed growers whose fields meet the standards, field inspection qualification certificates shall be issued.
Use dedicated sites for threshing and drying. After the seed field is harvested, dedicated sites must be designated for piling, threshing, and drying. Unqualified lots or other varieties are strictly not allowed to enter the seed site. During threshing and drying, farm machinery and tools must be carefully cleaned, and after drying the seed must be stored separately to prevent mechanical mixing and confusion between seed and grain.
Strictly control the gate for purchasing and warehousing. When collecting seed, seed must be submitted with a field inspection qualification certificate, and each bag must be inspected and fine-cleaned for warehousing strictly according to the variety's traits, such as grain color, grain shape, and depth of the ventral groove, with checks at every level.
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