As the state implements the implementation of improved seed subsidies for planting and wheat, the area of ​​improved wheat varieties will continue to expand, and the rate of new wheat varieties will be updated and replaced. The amount of “new, excellent and special†improved varieties of wheat production in Daejeon will gradually increase. Now we will briefly explain how to carry out quality control in the production of wheat seeds.
1 Choosing good seed sources of high purity is the premise and basis for ensuring seed quality. Production practice has proved that the purity of any one breed depends on the quality of the original species. If it is only relying on the field in the later stages, it is difficult to achieve high standards and high purity seeds. The introduction of the original species must be carefully examined from the breeding base, combined with the local introduction objectives, select the varieties (lines), and sign the order for the contract. When transporting, you should carefully check the name of the variety (system) and hang the internal and external labels to ensure that the provenance is authentic and reliable.
2 Select the production base Wheat seed production base should first choose the area with convenient transportation, fertile soil, convenient drainage and irrigation, and can be contiguous, with no quarantine diseases, insects, and weeds occurring. At the same time, farmers should be willing to accept the base. Village and group leaders have strong quality awareness and organizational management capabilities. The production bases should be kept as relatively stable as possible, clearly define their respective responsibilities, rights and obligations, and implement legal production.
(3) To sow the planting of the wheat seed production field, it is necessary to be responsible for the entire process from the seed source purchase to the allotment seed and sowing, and to prevent the seeds from being mixed. The "five unifications" and "two concentrations" approaches can be implemented. That is: unified planning, unified species, unified broadcast, unified technical guidance, unified inspection and acceptance. Concentrated sowing within the appropriate sowing period, where a variety (system) is planted contiguously.
4 to grasp the fields to go to miscellaneous wheat fields should be grasped three links.
Back to the jointing stage, combined with field management such as cultivating and weeding, according to the plant morphology, seedling color, etc., to identify the miscellaneous strains and timely removal.
From the heading to the flowering stage, the characteristic characteristics of the plant were fully exhibited. It can be identified from the leaf state, ear type, ear color, awn, etc., and the plant has good elasticity and strong lodging resistance, so we should seize the opportunity. Complete and thorough. Remove roots and mutants from the whole plant and take them out of the field.
From the grouting to the harvesting period, we will conduct further inspections of the uncompleted lands to ensure the quality of seed production.
5 Prevention of Diseases and Pests Wheat diseases and pests mainly include wheat stripe rust and aphids. Prevention and treatment should not be delayed as soon as possible, generally 2 times is appropriate. Central disease strains that were found to be aphid-destroying and infection-inducing stripe rust were mixed and sprayed with 40% omethoate plus methamidophos in combination with triadimefon (triadimefon) and 50% carbendazim wettable powder. At the grain filling stage, the above agent and potassium dihydrogen phosphate were used for the second time.
6 Pure harvest wheat seed field harvesting process to ensure good preservation. According to the region, the varieties are separately harvested, transported individually, and storage alone is an important measure to prevent mechanical mixing. Seed production bases should organize special harvesters to harvest them in a centralized manner. Before the harvest, the harvesters should be thoroughly cleared to prevent mechanical mixing and affect the seed purity. 7 The timely drying and drying process is an important link that affects seed germination rate and artificial mixture. The seed base must be responsible for the special person, and the wheat seeds should be promptly dried after harvest to reduce the moisture and increase the germination rate. Drying seeds should be cleaned of the sun, distinguish varieties, single drying, single transport, single release, single possession, to prevent mechanical mixing caused by drying process.
8 Selected Processing Seeds After harvesting and drying, it is necessary to classify the varieties for processing, such as selection, coating, and packing. Before processing, the used machinery shall be strictly cleaned, the processing site shall be thoroughly cleaned, and the processing personnel shall be carefully trained. According to the production procedure, the rings shall be tightly closed to prevent mechanical mixing.
9 Keep in storage Keep the seeds inside and outside after processing, and store them in storage. The seed warehouse should be ventilated and dry to prevent rat, moisture, fire and other hazards, and create suitable conditions for maintaining seed viability.
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