After wheat is sown, these problems are handled
What to do if wheat varieties are not properly selected?
The sowing of spring and weak winter varieties in the Zhonghua and Zaoxian plots will cause the wheat sprouts to prosper before the winter, which 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.
What happens when wheat is sown early?
The wheat sowing was too early. After the seedlings were unearthed, the leaves were long and narrow and the pods and tillers were insufficient. The main stem and a portion of the big buckwheat were differentiated before entering the two-legged stage in winter, and in the winter, when the temperature was -10°C and continued for about 5 hours, Freezing damage will occur.
Countermeasures: timely repression, inhibition of the growth of the main stem and bullae; pressure after the timely scratching, and combined with water, Mushi ammonium bicarbonate 15 kg, if necessary, with 0.2-0.3% of the chlorophyll solution spraying, to control Actress, resistant to freezing injury.
What should I do if wheat is sown late?
Due to the short growing period before winter and the insufficient accumulated temperature, the growth of young wheat seedlings is thin and the number of tillers is small.
Countermeasures: Mainly using paddling and replenishing fertilizers, applying 10-15 kg of ammonium bicarbonate in the three-leaf stage; poor wheat field with poor soil moisture and water seepage; timely pouring of 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.
What if wheat sowing is too shallow?
Wheat sowing depth of 3-5 cm is appropriate, sowing shallow (less than 3 cm), the growth of young wheat 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.
What if the wheat is sown too deeply?
The wheat is sown too deep (more than 5 cm), the emergence is slow, the film is slender, the tillering is small and small, the secondary root is weak and the wheat seedling is yellow and 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".
What if the wheat sowing is too large?
The performance of wheat seedlings is crowded, the plants are yellow, thin, weak, and their individual development is poor, with few tillers.
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. Fast-acting fertilizers to make up for the excessive consumption of soil nutrients.
How to deal with excessive base fertilizer?
Excessive application of base fertilizer, wheat seedlings grow out of the post-emergence, more tillers, leaves large, field cover is serious.
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.
What should I do if I don't have enough lye after my broadcast?
The performance of the emergence of wheat seedlings difficult, or born after delivery of the childbirth slow, gray-green leaves, short leaves, slow growth or stagnation (commonly known as "contracted heart"), the base of the leaves by the Zhejiang yellow dry, small and fine roots.
Countermeasures: After sowing, check the soil moisture in time, affect the plot where the waterlogging condition is insufficient or dry, and conduct irrigation with small water. Water-free pouring conditions can be used to repress 1-2 times.
What should I do if the soil is too wet after sowing?
After the wheat seedlings were unearthed, the leaves were pale yellow and the tillers were born slowly. When they were severe, the tips of the leaves became white and dry.
Countermeasures: Timely deep cultivating ventilation, and applying a small amount of quick-effect fertilizer to promote early-onset seedlings.
What to do if seedlings are incomplete after sowing?
After the sowing of wheat, the seedlings should be checked in time. Once the seedlings are found to be lacking, complete the repairs. The method is:
1, replant. Choose the same variety as the lack of seedlings, first soaking, germinating at a suitable temperature, or soaking with 25,000 times of naphthalene acetic acid or 500 times potassium dihydrogen phosphate solution for 12 hours, 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. Transplanted wheat seedlings should be selected from 1 to 3 seedlings. The depth of transplanting should be “without burying the roots and not displaying whitenessâ€. The transplanting time should not be later than “little snow†so as to facilitate the transplanting. Seedlings and wintering.
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