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First, what is the timely sowing of traditional agriculture in our country has always attached importance to planting seedlings. "See the seedlings three-thirds of joy, the whole seedlings 70% income", "the year of harvest, do not receive fields without seedlings", the understanding of conservation seedlings are very profound. So far. The fact that early sowing of farmlands has not yet been discovered indicates that early sowing is a new topic. The so-called seedling conservation should have five criteria: "Miao Quan, Miao Zao, Miao Chun, Miao Qi, Miao Jian". Among them, "all, early, homogeneous, and healthy" are directly related to the sowing date. To achieve early seedlings and seedlings is the basis for high yields. In the new spring in the Fuxin area, nine droughts in the spring and timely sowing are timely sowing at an earlier date, using the soil moisture in the early spring - the emergence of the planthopper. In spite of the differences between different years, the sowing date is appropriately advanced or wrong, and under conditions that are objectively allowed, the plows should be ploughed early to achieve the goal of early seedling planting. This is the connotation of timely sowing. 2. It is not time to broadcast in due time for 10 years. We have directly guided the “early sowing†of the two townships – Dongliujiazi Town of Fuxin County and his early broadcast of Benzalan Town have become a new application widely used by farmers. technology. In 1989, the field crops in the Dongliujiazi Town opened plows on April 5, two weeks ahead of normal. His Ben Zalan town began plowing on April 5th from 1991 to 1998; the drought was plowed on April 5th in 1997 and plowing on April 1st in 1998. 1. The geographical condition determines that the early sowing is a new area that belongs to aeolian and semi-arid areas. There are many hilly lands in the territory, and the soil organic matter content is low, and the water retention capacity is poor. The general climate in spring is characterized by high winds, scarce rain, rapid rise in ground temperature, large evaporation, and dry air. Years of meteorological statistics show that from the standpoint of composition of soil moisture during sowing, the bottom mulberry accounted for 94%, and spring rain accounted for 6%. Seeding seedlings must rely on the bottom, and the bottom hoe is easy to run off after the pulp is removed. It must be sowed early in time to implement the slurry slurry so that the bottom pod can be used to achieve the goal of seedling seedlings early. 2. In order to prevent disasters and prevent disasters from forcing early-seeding agriculture, it is a disaster-stricken industry. Disaster prevention is not as good as disaster prevention. Disaster prevention is not as good as disaster prevention. Early timely broadcasting is an effective measure to prevent disasters and avoid disasters. Fuxin has many agro-meteorological disasters with high frequency, and droughts, floods, winds, floods, and frosts are all common disasters, especially droughts. According to the survey conducted by the Sazaran Point, the number of maize roots planted on April 13 was 4.2, and the length of the main root was 22.8 cm, which was increased by 320% and 172.1%, respectively, compared with the sowing date on May 3. The roots of the crop have water-seeking habits. With a large number of roots and deep pricks, they will use deep water to emerge seedlings and spring and summer to enhance their ability to resist summer drought. Drought resistance is an adaptive response of crops and refers to the characteristics that crops have to suffer from drought and suffer the least and produce the least. The root system is developed and deep-rooted. The bigger the root to crown ratio is, the more it is drought-resistant, otherwise it is not drought-resistant. The root-to-crown ratios of maize planted on April 13 and May 3 were 20.1% and 14.8%, respectively. It can be seen that early sowing can promote root-shoot ratios and enhance crop drought resistance. According to the survey conducted by Hartao Nongkeo Station, the number of single-crop grain sown in Danwang 13 corn sown on April 20th was more than 66 grains sown on May 1st, and the 100-grain weight was 5 grams higher, which increased the yield by 41.3%. Early sowing alleviated the effects of autumn drought and early frost, with large spikes, multiple grains, and full grain, and achieved "three disasters early in the morning." 3. The full use of natural resources must be sowed in early 1997. The precipitation in Fuxin City in 1997 was close to normal, but more than in 1996. However, due to the unreasonable distribution of time, the formation of "a severe drought in 100 years" has resulted in a significant reduction in production. But there are also three favorable conditions, 13.3% more light than in previous calendar years; the accumulated temperature greater than 10°C is 8.6% more than in previous calendar years; autumn frost is late and is delayed by 10 days over the previous calendar year. His Ben Zalan town and Shazalanki point insisted on timely sowing, clever use of bottom soil, to achieve early emergence of seedlings, the emergence of complete seedlings, crop growth and development in advance, with June and August months of rain correspondingly alleviated the effects of drought in July and September. Despite serious typhoon, the average yield per mu was 446.9 kg, and the maximum yield was 577.5 kg per mu. The average yield of film-covered corn was 603.2 kg and the maximum yield was 704.9 kg per mu. In the year of major droughts, the advantage of early sowing was demonstrated, and the potential for increased production of varieties and resources was exerted. Some townships depended on the rain in the sky and only rained on May 28th. At this time, sowing was due to insufficient nutrition and growth. The plants were short and short grained, and the yield was severe. It was not the result of timely timely sowing. It was also wasted. Natural resources. 4. Global warming can be early sown by the greenhouse effect and the El Niño phenomenon affects global warming. Observed in Fuxin Base in 1998, Peach blossoms, April 4; Li Huakai, April 16; Pear blossoms, April 19. Yan began to return on April 16, all more than 10 days earlier than in previous years. The flight time of red-crowned cranes in the Panjin area was more than 10 days earlier than in previous years, and the phenology period was earlier. Fuxin Meteorological Bureau observed that the average temperature in April was 2°C higher than that of previous years in April, and the average time for soil turning was April 11th, which was 8 days earlier than the calendar year. It was no longer the “Air Valley Passâ€. Therefore, timely sowing time can also be advanced. Many years of sorghum and maize sowing period experiments showed that different sowing dates had higher early planting of plant height, leaves, number of grains per spike, grain weight and other yield and yield traits than in late sowing. In the sowing period in 1990, the sowing date of April 10 and April 20 was 398.7 kg and 405.6 kg, respectively. Compared with May 10 and May 20, the yield was increased by 6.3%, 17.2%, and 8.1%, 16.8, respectively. %. It can be seen that timely sowing is a seedling conservation measure and an increase in production measures.