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With the "species" supplemented by the evening, the varieties that are suitable for late sowing must use spring and weak spring varieties. The varieties suitable for late sowing include: Short-early 781, Yumai 10, and Neixiang 182.
With "fertilizer" as a supplement, late-sowing high-yield fertility-based late-seeding wheat has a relatively lower consumption of fertilizer compared with suitable-sowing wheat, but late-seeding wheat generally weighs heavily before it uses more nutrients and has less available nutrients. In addition to late sowing, the early seedlings are weak and weak, and they are not suitable for water and fertilizer management. Therefore, it is more important to apply basic fertilizer and seed fertilizer, increase nitrogen and phosphorus fertilizers, and promote early-onset seedling growth. The following conditions should be met:
More than three farmyard fertilizers, 30 kg of ammonium bicarbonate, 30 kg of superphosphate, seed fertilizer urea or 2.5 kg of diammonium.
Organic manure and ammonium bicarbonate should be plowed, phosphate fertilizer applied, seed fertilizer urea or diammonium mixed with seeds, but must be uniform, and not excessive, so as not to burn root buds. It is best to use urea 5-7.5 kg as the seed fertilizer, and then pick the seeds.
With “early†supplementation, how to convert the word “late†into “early†when the buckwheat was sown at the time of looting was the key to increasing the yield of late sowing wheat. To this end, the guiding ideology for planting is: Early in the evening, late for the time, and the foundation is firmly established. In terms of measures, it should take early-challenge time. Without prejudice to or impact on the yield and quality of the previous crop, try to sow early, plant early, and sow early; implement no-tillage and simple soil preparation methods. Land that has been deep-rooted in successive years can no longer be deeply turned. For low-humidity low-lying lands and rice fields, no-tillage can be carried out; soaking and germination can occur 2 to 3 days earlier than dry seeds. Method is: the seeds in about 50 °C warm water, soak for 5 - 10 minutes, remove and stack, put on a wet sack or straw bag, half a day after the inverted once to ensure that the temperature around 25 °C, hot when the cold water, Sprinkle warm water when cold, a day and night can be "split mouth dew white," if the day is not finished, must be spread out to dry, to avoid radicle elongation; appropriate shallow sowing. In view of the fact that late-seeding wheat fields have low seedling temperature and weak seedlings, appropriate shallow sowing can reduce the consumption of seed nutrients, and early emergence of seedlings can be achieved. This is an effective measure to fight for late seeding and strong seedlings. However, the land preparation must be pragmatic and the public opinion should be sufficient. If it is wet due to rain, or if it is low, it may be broadcasted 1.5--3 cm; “in order to make up for the nightâ€, increase the sowing amount; “late and lateâ€, if not sowed in the middle or late November, Wait until the early December sowing, so that the young shoots in the soil in winter over vernalization.
Scientific management of late-sowing wheat field Late-seeding wheat Seedlings before winter and early spring are weak, with little or no pods, small groups, and low consumption of fertilizer and water. Before returning to green jointing, there is basically no shortage of water and nutrients. Generally, it is not suitable to top-dress water, so as to avoid lowering Ground temperature affects seedling development. However, the poor quality of the site preparation, the lack of land and waste, easy to run or poor wheat field, winter and early spring return to the spring can be suppressed, shallow pressure after pressure, there is the effect of lifting and protecting the temperature.
High-yield field jointing and clever control, do not top-fat, do not water, control Chunyu, and promote winter glutinous into a spike. Early spring roots, from mid-February to early March, shallow earthworm loose soil ventilation, warming and protecting earthworms, promote early-onset, and promote rooting. However, it is not possible to fertilize water prematurely because supplying fertilizer and water prematurely will affect root growth. Second, it will cause large amounts of spring grasshoppers in the spring, and it will lead to long and slow growth in the field, delaying the two stages of differentiation and delaying the growth period. However, in the middle and low-yield fields, the management of spring water and small fertilizers can promote rooting, childbirth, and increase populations.
Get up in the jointing period. The period of getting up is a critical period of management. Fertilizer attack, Mu recovery urea 7.5--10 kilograms, can make early maturation, prevent late-maturing lust, promote the growth of flag leaves, their leaves and stem sections, to improve the photosynthetic efficiency in the middle and later periods, increase the grouting intensity of wheat, improve Thousand grain weight is very favorable.
Pouring water of the booting, flowering grouting, reducing the abortion of flowers, increasing the number of grains per panicle, increasing the grouting intensity, and early maturation.
Foliar spraying of fertilizers and hormones, disease prevention, pest control, anti-blow, anti-dry hot wind. Foliar spray fertilizer is the key to late seeding wheat management. Late seeding wheat seedlings are not suitable for water and fertilizer management. In the spring of February and March, urea or compound fertilizer can be sprayed on the leaves to promote growth. Spraying to promote the growth of vegetative growth is more effective.
Late-seeding wheat high-yielding cultivation techniques
Due to late planting, the accumulated temperature needed for wheat growth and development is insufficient, and the seedlings are not well developed. Not only the number of panicles is reduced, but also the number of grains per ear and grain weight are affected to varying degrees. Late sowing of wheat has become a “pulling field†in production. In order to solve this problem, we have based on the investigation and research in recent years, and with reference to a large amount of information, we propose the following high-yield technical measures:
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