During the autumn sowing of wheat, there are often misuses such as improper sowing date, excessive seeding amount, etc., and measures should be taken in time to respond.
The selection of seed not planting spring wheat varieties in early plots will cause the wheat seedlings to grow too fast before winter, which is not conducive to safe wintering. Countermeasures: On the basis of early demarcation and repression, pre-winter soil shall be used to protect the wheat seedlings from winter.
Early sowing of wheat sowing too early, after the seedlings unearthed leaves narrow, long, down, lack of tillers, the main stem and the large spikes before the winter spikelets differentiate into the two-edge period, the cold in winter is prone to frost damage. Countermeasures: timely repression, inhibition of the growth of the main stem and Oita pods; pressure after the timely plucking, combined with watering Ammonium bicarbonate 15 kg per acre, if necessary, can be sprayed paclobutrazol, uniconazole and other plant growth regulators control leggy, Protect against freezing injury.
The sowing was too late due to the short growing period before winter, and the accumulated temperature was insufficient, resulting in the growth of thin wheat seedlings with less tillering. Countermeasures: Mainly use paddling and replenishing replenishment. Ammonium bicarbonate is applied at 10 to 15 kilograms per acre in the 3-leaf stage. Soils with poor soil moisture and fast water seeps. The poorly water-permeable plots should not be watered before winter); the last time the zone is fenced before freezing, it is necessary to pay attention to the soil surrounding the roots to protect the seedlings safely.
The sowing depth of light wheat sowing is preferably 3 to 5 cm. Sowing too shallow (less than 3 cm), the growth of young wheat seedlings, bare part of the tillering festival, more and smaller tillers, not drought tolerant, susceptible to frost and premature aging. Countermeasures: Squeeze several times before emergence, combine the roots with roots after emergence, and cover with soil if necessary during the wintering period.
Seeding deep wheat sowing depth of more than 5 cm, the seedlings are slow, the leaves are slender, the tiller is small and small, the secondary roots are weak but the wheat seedlings are yellow and thin. Countermeasures: In order to clear the trees in the earth, use shovels to start from the center of the noodle surface and cross the ridges. When clearing to the last line, drag all the remaining soil onto the back of the beak. Wheat that is sown at the appropriate time, usually before the winter, starts from the 2-leaf stage and ends when it is “little snowâ€.
Excessive sowing performance is due to the overcrowding of the wheat seedlings. The plants are yellowish and thin, and their individual development is poor, with few tillers. Countermeasures: Firstly, sparse seedlings, especially in the headlands, Tanabe, and fields, must be sparsely and sparsely so as to establish a suitable group structure and promote individual development; then, in combination with watering, a small amount of nitrogen and phosphorous can be applied. Fertilizer to make up for the excessive consumption of soil nutrients.
Excessive base fertilizer Excessive growth of wheat seedlings after prolonged over-expansion, more tillers, leaf blades, and severe field closure. Countermeasures: When the main stem of wheat grows 5 leaves, it is 5-7 cm deep between the rows of wheat, cut off some secondary roots, control nutrient absorption, reduce tillers, and cultivate strong seedlings.
After sowing, the lyrics of the seedlings were not easy to emerge from the wheat seedlings, or the emergence of the seedlings was slow after the emergence of the seedlings. The leaf color was grayish green, the leaves were short, and the growth was slow or stagnant. The base leaves gradually became yellow and dry, and the roots were small and fine. Countermeasures: timely inspection of soil moisture after sowing of wheat, lack of affection on the impact of the emergence of the plot, there are water irrigation conditions for small water irrigation, water-free conditions of timely suppression of 1 to 2 times.
After sowing, the soil was too wet and the leaf color was yellowish. The birth was slow, and the tip was white and dry. Countermeasures: Timely deep cultivating ventilation, and applying a small amount of quick-effect fertilizer to promote early-onset seedlings.
After sowing, incomplete emergence of wheat seedlings in a timely manner after inspection, once found lack of seedlings to replant. Choose the same variety as the lack of seedlings, first soaking seeds under suitable temperature conditions, germination, or soaking with 500 times potassium dihydrogen phosphate solution for 12 hours, and then sowing, in order to facilitate the emergence and growth. There is still no time for replanting and reseeding after the seedlings are lost, and can be transplanted and planted on the spot in the wheat tillering period. Choose strong seedlings with 1 to 3 tillers for transplanting. The depth should be “not buried on the ground and not exposed on the groundâ€, and the transplanting time can not be later than “little snow†to facilitate seedling and wintering.
The selection of seed not planting spring wheat varieties in early plots will cause the wheat seedlings to grow too fast before winter, which is not conducive to safe wintering. Countermeasures: On the basis of early demarcation and repression, pre-winter soil shall be used to protect the wheat seedlings from winter.
Early sowing of wheat sowing too early, after the seedlings unearthed leaves narrow, long, down, lack of tillers, the main stem and the large spikes before the winter spikelets differentiate into the two-edge period, the cold in winter is prone to frost damage. Countermeasures: timely repression, inhibition of the growth of the main stem and Oita pods; pressure after the timely plucking, combined with watering Ammonium bicarbonate 15 kg per acre, if necessary, can be sprayed paclobutrazol, uniconazole and other plant growth regulators control leggy, Protect against freezing injury.
The sowing was too late due to the short growing period before winter, and the accumulated temperature was insufficient, resulting in the growth of thin wheat seedlings with less tillering. Countermeasures: Mainly use paddling and replenishing replenishment. Ammonium bicarbonate is applied at 10 to 15 kilograms per acre in the 3-leaf stage. Soils with poor soil moisture and fast water seeps. The poorly water-permeable plots should not be watered before winter); the last time the zone is fenced before freezing, it is necessary to pay attention to the soil surrounding the roots to protect the seedlings safely.
The sowing depth of light wheat sowing is preferably 3 to 5 cm. Sowing too shallow (less than 3 cm), the growth of young wheat seedlings, bare part of the tillering festival, more and smaller tillers, not drought tolerant, susceptible to frost and premature aging. Countermeasures: Squeeze several times before emergence, combine the roots with roots after emergence, and cover with soil if necessary during the wintering period.
Seeding deep wheat sowing depth of more than 5 cm, the seedlings are slow, the leaves are slender, the tiller is small and small, the secondary roots are weak but the wheat seedlings are yellow and thin. Countermeasures: In order to clear the trees in the earth, use shovels to start from the center of the noodle surface and cross the ridges. When clearing to the last line, drag all the remaining soil onto the back of the beak. Wheat that is sown at the appropriate time, usually before the winter, starts from the 2-leaf stage and ends when it is “little snowâ€.
Excessive sowing performance is due to the overcrowding of the wheat seedlings. The plants are yellowish and thin, and their individual development is poor, with few tillers. Countermeasures: Firstly, sparse seedlings, especially in the headlands, Tanabe, and fields, must be sparsely and sparsely so as to establish a suitable group structure and promote individual development; then, in combination with watering, a small amount of nitrogen and phosphorous can be applied. Fertilizer to make up for the excessive consumption of soil nutrients.
Excessive base fertilizer Excessive growth of wheat seedlings after prolonged over-expansion, more tillers, leaf blades, and severe field closure. Countermeasures: When the main stem of wheat grows 5 leaves, it is 5-7 cm deep between the rows of wheat, cut off some secondary roots, control nutrient absorption, reduce tillers, and cultivate strong seedlings.
After sowing, the lyrics of the seedlings were not easy to emerge from the wheat seedlings, or the emergence of the seedlings was slow after the emergence of the seedlings. The leaf color was grayish green, the leaves were short, and the growth was slow or stagnant. The base leaves gradually became yellow and dry, and the roots were small and fine. Countermeasures: timely inspection of soil moisture after sowing of wheat, lack of affection on the impact of the emergence of the plot, there are water irrigation conditions for small water irrigation, water-free conditions of timely suppression of 1 to 2 times.
After sowing, the soil was too wet and the leaf color was yellowish. The birth was slow, and the tip was white and dry. Countermeasures: Timely deep cultivating ventilation, and applying a small amount of quick-effect fertilizer to promote early-onset seedlings.
After sowing, incomplete emergence of wheat seedlings in a timely manner after inspection, once found lack of seedlings to replant. Choose the same variety as the lack of seedlings, first soaking seeds under suitable temperature conditions, germination, or soaking with 500 times potassium dihydrogen phosphate solution for 12 hours, and then sowing, in order to facilitate the emergence and growth. There is still no time for replanting and reseeding after the seedlings are lost, and can be transplanted and planted on the spot in the wheat tillering period. Choose strong seedlings with 1 to 3 tillers for transplanting. The depth should be “not buried on the ground and not exposed on the groundâ€, and the transplanting time can not be later than “little snow†to facilitate seedling and wintering.
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