Zhao Guangcai, Crop Research Institute of the Chinese Academy of Agricultural Sciences, said that for wheat seeds that sprout in the field before harvesting, they should be promptly dried after harvest. They should not be mildewed or rotten. Such seeds are exposed to suitable germination conditions, and the top of the seed has dried up. The young shoots can continue to grow, and they germinate faster than normal seeds and have a high degree of uniformity and can be planted. For seeds with longer ear buds, if sprouts that have grown during threshing are damaged or knocked out, they cannot be seeded. For wheat that has had sprung sprouting, the germination test should be carefully done before sowing, and whether or not to plant seeds should be determined according to the germination (or revival of shoots).
The germination rate of wheat commodity seeds should not be lower than 85%, and the germination rate of self-retention seeds should also reach this standard, which will be beneficial to achieve early seedlings and whole seedlings. Affected by ear sprouting, when the provenance is tense, the germination rate of self-retained seeds is not less than 80%, and it can be planted, but the seeding rate should be increased appropriately. The germination rate is too low to plant. In 2008, the red-peeled wheat in our province was affected by ear sprouts, which made the seeds tight. The relevant departments reduced the germination rate of some wheat commercial seeds from 85% to more than 80%.
For the seed germination rate of 80% to 85%, by adjusting the seeding rate, sowing date, nitrogen and other measures to increase the emergence rate and seedling rate, ensure seedlings, improve the quality of wheat seedlings, breed high-yield groups. In the case of cornices, suitable early sowing can be conducted within the appropriate period, and generally can be sown 3 days earlier. In rice-wheat rotation areas, rice ploughing is generally delayed and should be sown immediately after rice is harvested. Rice cultivating earlier, and wheat can be sown appropriately, can increase the amount of seed used by 10% on the basis of normal seed use, or increase the amount of nitrogen fertilizer by 10% accordingly. If the rice cultivars are late and cannot be sown properly, they can increase their seed use by 10% and increase their nitrogen fertilizer use by 10%. Rice-wheat wheat generally can guarantee proper sowing, but the emergence rate of wheat is lower than other sowing methods, and the sowing amount should be increased by about 20%.
The germination rate of wheat commodity seeds should not be lower than 85%, and the germination rate of self-retention seeds should also reach this standard, which will be beneficial to achieve early seedlings and whole seedlings. Affected by ear sprouting, when the provenance is tense, the germination rate of self-retained seeds is not less than 80%, and it can be planted, but the seeding rate should be increased appropriately. The germination rate is too low to plant. In 2008, the red-peeled wheat in our province was affected by ear sprouts, which made the seeds tight. The relevant departments reduced the germination rate of some wheat commercial seeds from 85% to more than 80%.
For the seed germination rate of 80% to 85%, by adjusting the seeding rate, sowing date, nitrogen and other measures to increase the emergence rate and seedling rate, ensure seedlings, improve the quality of wheat seedlings, breed high-yield groups. In the case of cornices, suitable early sowing can be conducted within the appropriate period, and generally can be sown 3 days earlier. In rice-wheat rotation areas, rice ploughing is generally delayed and should be sown immediately after rice is harvested. Rice cultivating earlier, and wheat can be sown appropriately, can increase the amount of seed used by 10% on the basis of normal seed use, or increase the amount of nitrogen fertilizer by 10% accordingly. If the rice cultivars are late and cannot be sown properly, they can increase their seed use by 10% and increase their nitrogen fertilizer use by 10%. Rice-wheat wheat generally can guarantee proper sowing, but the emergence rate of wheat is lower than other sowing methods, and the sowing amount should be increased by about 20%.
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