One of the mistakes: the selection of species, and the early sowing of spring crops and weak winter varieties will cause the wheat sprouts to prosper before the winter and is not conducive to safe wintering. Countermeasures: On the basis of early demarcation and repression, pre-winter soil shall be used to encircle the roots, or a cover shall be applied to “protect the head of manure†to protect the wheat seedlings from wintering safely.
The second mistake: sowing too early wheat sowing too early, after the seedlings are unearthed, the leaves are long and narrow, draped over, and the tillers are insufficient. The main stem and a portion of the big buckwheat are differentiated before entering the two-legged period; the winter is encountered at -10°C and continues. Freezing occurs when the temperature is low for about 5 hours. Countermeasures: timely repression, inhibition of the growth of the main stem and the big pupa; pressure after the timely pluck, combined with watering, Mushi ammonium bicarbonate 15 kg, if necessary, with 0.2 to 0.3% chlorophyll solution spraying, to control Actress, resistant to freezing injury.
The third mistake: sowing too late due to the short growing period before winter, the accumulated temperature is insufficient, resulting in the growth of wheat seedlings is thin and weak, and there are few tillers. Countermeasures: Mainly using paddling and replenishing fertilizer, and applying 10 to 15 kg of ammonium bicarbonate in the three-leaf stage; poor wheat field with poor soil moisture and water seepage; timely pouring of drowning water after the three-leaf stage (however, suitable moisture or soil moisture, Poorly waterlogged plots should not be watered before the winter); the last time it is ploughed before freezing, it is necessary to pay attention to the soil surrounding the roots in order to protect the seedlings safely overwintering.
The fourth mistake: sowing the shallow wheat sowing depth to 3 ~ 5 centimeters is appropriate, sowing shallow (less than 3 cm), the growth of young seedlings, bare tiller section, tiller is more than small, not drought, susceptible to frost and premature aging. Countermeasures: Squeeze a few times before emergence, combine the roots of the soil after the emergence of seedlings. If necessary, cover the soil with a cover soil or cover the “headed manure†during the wintering period to prevent overwintering and freezing.
Five mistakes: Seeding deep wheat sowing too deep (more than 5 cm), the emergence of slow, slender leaves, small and small tillers, secondary roots and weak, wheat seedlings yellow thin. Countermeasures: Timely clearing the earth. The method is: using a bamboo rake or shovel to start from the center of the sampan surface, along the ridge to cross the ridge, when cleared to the last line, the rest of the soil will be dragged to the back of the rake; for the appropriate sowing of wheat, the pre-winter qingke It usually starts from the two leaf stage and ends when it is "small snow".
Mistake 6: The oversizing performance is due to the overcrowding of the wheat seedlings, the thin, thin and thin plants, the poor development of the individual, and the few births. Countermeasures: First, sparse seedlings, especially in the fields, fields and fields, should be sparse and sparse in order to establish a suitable group structure and promote individual development; combine watering, topdressing with small amounts of nitrogen and phosphorus. Quick fertilizer. To make up for the excessive consumption of soil nutrients.
Seven mistakes: Excessive base fertilizer Excessive emergence of wheat seedlings grows too prosperous, with more tillers, leafy leaves, and severe field cover. 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.
Eight of mistakes: The lack of lyricism after sowing is manifested in the difficulty of unearthing the wheat seedlings, or the slow birth of the childbirth after delivery, the leaf color grayish green, the heart leaf is short, the growth is slow or stagnant (the masses call it “mindling seedlingsâ€), Yellow and dry, small and fine roots. Countermeasures: After wheat sowing, timely check the soil moisture, affect the plots where the waterlogging condition is insufficient or dry and affect the emergence, and carry out the irrigation with small water for the irrigated conditions, and promptly repress 1～2 times of water-free pouring conditions.
Nine errors: 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.
Tenths of mistakes: Incomplete seeding after sowing Countermeasures: After the sowing of wheat, timely check the emergence of seedlings. Once the lack of seedlings is discovered, make up for it. The method is: 1 replant. Choose the same variety as the lack of seedlings, first soaking seeds under suitable temperature conditions, germination, or soaking for 2 hours with 25,000 times naphthaleneacetic acid or 500 times potassium dihydrogen phosphate solution, and then sowing, to facilitate emergence and growth; 2 Transplanting. For land patches that are not ready for replanting and replanting, there is still a lack of seedlings that can be transplanted and planted on the spot in the wheat tillering period. Transplanting wheat seedlings should be selected with strong seedlings with 1 to 3 tillers, and the depth of transplanting 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 growth. Seedlings and wintering.
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