The late-sowing wheat strain high-yielding cultivation technology is a cultivation technique for realizing high-yield wheat under the condition that the sowing date of wheat is delayed. Northern winter wheat areas generally call the late sowing wheat or late buckwheat sown after sowing until the accumulated temperature below 420°C. This kind of wheat has only 4 leaves per plant and 1 tillering or no tillering. I. Causes of late sowing of wheat There are two types of causes for late sowing of wheat: First, due to the maturity of late crops and late harvesting, delayed sowing can be achieved without gargle, resulting in the formation of late sowing wheat. In the Huanghuai Haimai area, cotton buckwheat is mainly followed by peanut buckwheat, sweet potato buckwheat and rice buckwheat. For example, suitable sowing dates for wheat in Lubei and Luzhong areas of Shandong are from October 1 to October 10, and Lunan and southwestern Shandong regions are from October 5 to 15. The harvest of the previous crop is in mid-late or late October. In early November, late sowing was delayed due to the late harvest, which led to the formation of late sowing wheat. Second, due to lack of rain and other rain sowing or too much rainfall had to delay the sowing date and form late sowing wheat. Second, the breeding characteristics of late sowing wheat 1. Before winter, the seedlings are young and weak. The strong seedlings from the sowing to the main stem to form a 5-leaf 1 heart require about 570°C above 0°C. The wheat in the northern wheat region is customarily referred to as sowing when the accumulated temperature is below 420°C from sowing to wintering. Wheat or late buckwheat. The wheat planted from the end of October to the beginning of November has only one leaf in most years and is also known as “a needleâ€. In mid-to late November, the wheat planted in late October generally cannot grow. 2. The birth process in spring is fast and short. It was observed that under the appropriate sowing and late sowing of the same variety, late spikelet differentiation of wheat was started sooner, with shorter time and faster development, and the formation period of the septum of young panicle differentiation could basically catch up with the sown wheat. The later the sowing, the shorter the duration of ear differentiation. 3. The spring tiller has a high rate of spike formation. Due to the lower accumulated temperature of late-seeded wheat, the number of leaves of the main stem is small, and there are few tillers or basically no tillers before winter, but the temperature rises in the spring, the tillers grow rapidly, and the spike formation rate is higher than that of the appropriate sowing. In addition, because the maturity of late-seeding wheat is delayed by about 3 days compared to the wheat sown in the appropriate period, some years are vulnerable to dry hot wind during the grain filling period and reduce the 1000-grain weight. Third, late sowing wheat cultivation techniques 1. Add fertilization material to supplement fertilizer late. It is necessary to increase the amount of fertilizer applied to late-seeding wheat to supplement the deficiency of effective nutrients in the soil, and promote more than one tiller and more spikes of wheat into large spikes and create high yields. It should be noted that, in areas where the soil is severely deficient in phosphorus, the application of phosphate fertilizers has a significant effect on promoting root development and increasing dry matter accumulation and early maturation. Therefore, formula fertilization is critical. The method of fertilizing wheat in late sowing should adhere to the principles of organic fertilizer and chemical fertilizer as the supplements and fertilization. Generally 350 ~ 500kg per mu of late sowing wheat, Mushi organic fertilizer 3500 ~ 4000kg, urea 20kg, superphosphate 40 ~ 50kg. 2. Use good breeds to make up late. Practice has shown that late sowing of wheat planting semi-wintering varieties, the stage of development process is faster, the shorter the time of vegetative growth, grouting intensity increased, easy to achieve large ear, grain, grain weight, early maturing and high yield purposes. 3. Increase the seeding rate to cover late. The late-seeding wheat tillers were significantly reduced, and the use of conventional seeding volume will inevitably result in a shortage of panicles and affect yield. Therefore, increasing the seeding rate and relying on the spikes of the main stem is the key to increasing the yield of late sowing wheat. Care should be taken to determine the appropriate seeding rate based on the tillering characteristics of the sowing date and variety. Localities have some experience in increasing the seeding rate of late-seeding wheat. 4. Improve the quality of soil preparation so as to make up for the night. (1) Early Teng, early sowing when grab. It is necessary to try to achieve early unloading, early preparation, early sowing, and speed up the planting schedule to reduce the loss of accumulated temperature without affecting the yield of autumn crops. (2) Fine soil preparation and planting. After the harvest of the former crop, we must pay close attention to the time and plough them thoroughly, fine-leveling and arranging the plots. The plots should be filled with water for the lack of lyrics, and the foot hoe should be built to make the soil heavy and free from obscurity. The suitable soil moisture for late planting of wheat is 70%-80% of the field water holding capacity. It is best to water the planting crops before the harvest of the former crops and cultivate the crops in time till the crops are harvested. The crops can also be harvested and cultivated in time. . (3) Fine sowing, appropriate shallow sowing. Under the premise of sufficient athletes, proper shallow sowing is an effective measure to make full use of the accumulated temperature in the early stage, reduce the nutrient consumption of seeds, and achieve early emergence, multiple rooting, early growth, and early tillering. The general sowing depth is appropriate to 3~4cm. (4) soaking germination. In order to make early emergence of late barley and wheat seedlings with sufficient moisture, soaking with 20 ~ 30 °C warm water before sowing 5 ~ 6h, remove and dry sowing, can be early emergence of 2 to 3 days. Or soak the wheat seeds with warm water of 20-25°C for 1 day and night before sowing, and then remove the seeds after absorbing enough water and pile them into 30cm thick seed piles, and turn them several times a day. Drying and sowing can be done 5 to 7 days earlier than seeding dry seed. 5. Scientific management helps to build more seedlings. (1) Repression and slashing to promote seedling growth. The key to promoting the early and long-term growth of wheat in the green period is to increase the temperature. The key to management is suppression and plucking, which has a significant effect on warming and protecting the roots, promoting root development, cultivating strong seedlings, and increasing tillering. (2) Grasp the management of fertilizer and water during the period of starting or jointing. In general, late-seeding wheat field is suitable for the top-dressing period; the wheat field with high ground fertility, adequate basic fertilizer, and relatively prosperous wheat seedlings can be postponed to the jointing stage or post-jointing stage; the late-seeding group with insufficient population should be top-dressed in the late-green period. Watering to promote the growth of tiller in spring. (3) Strengthen late management Booting stage is the critical period of wheat water requirement. Watering has a significant effect on flower growth, and should be watered according to soil moisture during the booting stage or flowering stage to ensure that the soil moisture is the field water holding capacity of 75 %about. Late buckwheat should be filled with grouting water in order to increase the duration of photosynthetic high value, and to resist the harm of dry hot wind and increase the grain weight. In addition, attention should be paid to the control of wheat rust, powdery mildew and aphids. Natural Green Tea,Fanning Bulk Tea,Green Tea Extract,Mighty Leaf Green Tea Hunan Junshan Yinzhen Tea Industry Co.,Ltd , https://www.junshan-tea.com