The aim of implementing a conservation strategy for early spring nursery is to significantly advance the building and breeding of species, and to extend the local growth period by 23 days. To increase the local rice production by 1:20%, so that most of the water in the rice cultivation area of ​​the “Public†production The results of the preliminary test were set at 10, showing that "chemical protection" and "cultivation S" method led to early normal fruiting and early maturation earlier than 15 days (on April 13). The results of the sampling and investigation before raising seedlings for 1015 days earlier showed that Ye Lingjin’s “occurrence of scores and bureaucratic tactics†had allowed the situation to go back to scratching and embarrassing. purpose. Key words: rice; super early sowing 1 test processing results 1.1 super early sowing treatment (test conducted in Peace Village, Lishu Township, Huanan County) The purpose of this treatment is to demonstrate the antifreeze effect of the enhanced heat preservation seedling method and the possibility of early breeding. The specific operation methods, test procedures and results are as follows: The test species was line 1 and the seeds were sown on April 3 after germination. The depth of water immersion was 3cm. After the sowing, it continuously encountered a low temperature of 1-5-*6X: freezing. The maximum thickness is 2.50 cm, and the water-covering membrane is removed after 13 days (ie, April 16) after emergence. The results are as follows:. 1.1.1 Intensification of heat preservation Seedling method at the seedling stage See seedlings on April 14 and Qimiao on the 16th, which is 1015 days earlier than the production field (ie, the traditional dry seedling method, and the seedling stage is on or about April 30). Nearly 200*C, 1.1.2 Childbirth Survey Results Seedlings are strong in the Yutian farmland. On May 27th (before transplanting), the tillers were separately adjusted. The result was that 98% of the seedlings with enhanced insulation and seedling methods were planted with pods. There were 4 tillers, and the average number of pods per plant was 3, and only 60% of pods were planted with common dry nursery methods. Among them, a few individuals had 2 tillers, and only one of them had an average tiller. After the implantation of Honda, the growth advantage of the seedlings grown by the enhanced heat preservation seedling method is also very obvious (the results of this experiment are gradually adjusted, counted, and arranged). 1.2 Early sowing treatment The purpose of this test treatment in the Rice Research Institute of the Heilongjiang Academy of Agricultural Sciences in the eastern suburbs of Jiamusi is to reveal the actual effects of different depths of water immersion. There are three sub-treatments (ie, water depths of 3cm, 2cm, 1cm) and ck (water-free layer). The test species are Danyan No. 4, Danjing No. 3, and Zaofeng Dwarf (the three varieties are ultra-late-maturing groups). No. 6 and No. 5 (a late-maturing group), etc., were germinated and sown on April 10, and after the emergence, the water-covered bottom membrane was removed on April 24, and then water was poured into the simple membranes on both sides of the trench until Transplanting rice seedlings, seedlings quality adjustment environment on May 19 after sampling, the test results are summarized as follows: 1.2.1 emergence of seedling water treatment 3cm treatment on April 19th seedling emergence.When the depth of water cover is reduced by 1cm, the emergence period is delayed 1~2d. Ck raised seedlings on April 24. 1.2.2 Leaf age (Table > Ultra-late-maturing group (for other varieties of materials in other provinces, Tanjing No. 4, Danyang No. 3, and A. Fructus), the thickness of covered water is increased by 1cm for each layer, and the leaf-bearing fertility rate is accelerated by 0*100.15 pieces. The late-maturing group (ie local late-maturing varieties, Longjing 5, Longyan 6) showed no significant changes in the leaf age. 1.2.3 Bifurcation (Attached) The ultra-late-ripening group had 1.40 per plant for the water-splitting of each variety, and the Dansou 3 with more tillers in the ck had a total of 0.80 for the tillering, and the other two varieties only had the tiller only. 0.20 and 0.40; the late-maturing group of two varieties of water-covered plants had 1.30 and 1.2.4 fresh weights of fresh water for each of the two varieties (see attached table). The fresh weight of the super-ultered water-covered varieties was 1.301.80 times that of the control. The fresh weight of the group of irrigated water is the control 1. 2 Analysis and discussion The above results show that in the case of early sowing, both the emergence, the age of the leaf, the occurrence of tillering, the fresh weight of 100 plants, etc., have all proved to strengthen the heat preservation seedlings. The law's extremely strong insulation (antifreeze), long-term effect; in the case of ultra-early sowing, the conventional dry seedling method is unable to make the seed resistant to cold freezing injury and seedlings, but the enhanced heat preservation seedling method has been safely spent -5-6*C low temperature conditions, safe emergence. For this experiment, the ultra-early sowing is about 1015 days earlier than the conventional dry seedling method, and the accumulated temperature is about 150200*C. It is possible to use a species that crosses a accumulated temperature zone, and the increase in production will be more than 10%, on the other hand. This test is only a simulation test. The insufficiency is that it cannot provide a strong method of strengthening insulation after emergence, but because it can be carried out at a small scale and at a low cost, a simulation is used. In fact, this form can only be sown 1015 days ahead of time (April 5th). When extremely early sowing (planting on March 2025) is carried out, the simulated test cannot achieve post-emergence enhanced thermal insulation. The specific operation of the reinforced heat preservation method of the present design is completely different from the specific operation of the simulation method, and the principle is the same. The actual heat preservation seedling raising method in production must have a certain scale and some equipment, and do some necessary changes in methods. First, the production must be carried out in a greenhouse or a middle shed. There must be wells for pumping water, lifting pumps, temperature control switches, spray nozzles, and pipes. Foaming membranes should be provided on the nursery. Watertight) A drain pump is provided at the other end of the shed opposite the lift pump. In this way, when the temperature in the shed falls below 7 TC, the temperature control switch is turned on and the spray starts. The fog film on the mash catches the dense droplets (guarantee the dryness of the seedling noodles) and enters into the ditch, and the drainage pump will sink. After cooling together (0X: above) the water is discharged outside the shed. When the temperature in the shed rises to 7C after sunrise, the temperature control switch is turned off, the spray stops, and the temperature in the grid rises rapidly after reaching the sunlight, reaching the thermal insulation increase. Wen Ru aims, compared with the simulation test in the use of water, the actual design used in the spray method (instead of the irrigation method in the simulation test), to prevent the water poured into the bottom of the barrel, the occurrence of surface seepage Leakage, the possibility of serious losses, and the combination of spraying and misting, making it possible to continue the use of enhanced insulation methods after emergence and even throughout the nursery period.These are similar in that they all use the large heat capacity of water and The typical fluid properties, when the temperature is reduced to a certain degree (usually in the evening), exert a strong counteracting to the temperature reduction effect on the seedbed, and after the temperature rises to a certain extent (usually in the morning), this is released. Measures. The actual design of the enhanced insulation seedling raising method is very automatic, the added manpower is almost negligible, the equipment is also permanent, and the annual unit area increase cost will also be very low (an increase in the seedling period is expected to be within 100 yuan/hm2 ), and the specific operation is much simpler than the simulation test operation, and it also very reliably solves the problem of post-emergence strengthening insulation that the simulation test cannot solve. 3 Outlook The prospect of this study will be very broad, and its final research results will generally extend the growth period of rice cultivation in cold regions by 2030 days, and increase the accumulated temperature by 300400 (: the rice paddies will continue to move at high latitudes. It will be a reality that the yield in each rice area will increase by more than 20%, and the hectare output will be stable at 9,000 000 kg. The widening of the breeding range of varieties and the improvement of plant protection and cultivation methods will play a powerful role in promoting a new revolution in agriculture. Table-enhanced nursery seedlings simulation test 秧 Seedlings quality test result cultivars mulch depth Water Leaf age single planting Tillers fresh weight ratio FW (with control fresh weight 1) ck = 1.00 Dan a4 Dan 3 Zaofeng dwarf 5 LongTech 6 Brass Towel Rail,Stainless Steel Grab Bar,Anticorrosive Kitchen Rack,Double Towel Rack Bathroom Heshan Zhongxin Sanitary Ware Ind., Co., Ltd , https://www.baolongfaucets.com