Wheat production "seven-point, three-in-one", timely sowing is the key to achieve high yields. The suitable sowing date for winter wheat varieties in the Huaibei region of the province is in the middle and early October. The semi-winter spring varieties along the Huaihe River are in late October. The spring varieties in the Central Jiangsu region are from late October to early November. Sex varieties range from late October to early November.
According to the province's agricultural system statistics, as of October 29, the province's wheat has sowed 16.8 million mu, which is more than half of the estimated area. In the northern Jiangsu region, 15.66 million mu of wheat has been planted, and the progress rate is 70%. The progress of Lianyungang and Suqian cities is about 80%, and that of Huai'an City is about two-thirds. The progress of Yancheng City is nearly half. In the Central Soviet Region, 106 hectares of wheat are planted and the progress is 14%; the progress of Yangzhou City is about one-quarter, and the progress of Nantong and Taizhou cities is about 10%. The wheat planting work in the southern part of Jiangsu Province has just started and the area sown has only reached 80,000 mu. It is estimated that there will still be a relatively large area of ​​wheat sowing late in the province this year, and the sowing period will be later than the suitable sowing period of more than 10 days. How can these late sowing wheats achieve high and stable yields?
"Sowing of late-seeding wheat due to lack of accumulated temperature before winter, it is difficult to bring glutinous overwintering, and the rate of tilling and tilling is low. Take independent stalk cultivation techniques, increase the amount of sowing, increase the basic seedlings, fertilizer management before the control and promote, compete for the spike, attack the big spike It is conducive to achieving high and stable production.†Said Shu Linhua, chief of the branch of the Provincial Oil Planting Branch, said that the technique of wheat stern stalk cultivation is to adapt to the situation that the smashing of the smashing stumbling has been too late or droughts and floods and has to significantly postpone the sowing period. Effective disaster response technology. The key to technology is "four supplements and one promotion."
One is to use improved varieties to make up for the night. Relatively speaking, early maturing varieties are more suitable for late sowing, and relatively early maturing, large grouting strength, and easy access to fine varieties with large spikes, multiple grains, and high grain weight are favorable for high yields and stable yields. Huaibei region should use semi-winter spring-type large ear varieties, such as Huai Mai 21, etc.; Huaihe region should use spring-type large ear varieties, such as Zheng Mai 9023, etc.; Suzhonghe should choose spring in the south of Jiangsu Province. Big ear varieties, such as the Yangmai series of wheat varieties. If there is no such variety, it is not a big problem to apply other varieties suitable for local cultivation.
The second is to improve the quality of farming sowing, so as to make up for the evening. Without affecting the yield of autumn crops, it should be possible to sow as early as possible, early as early as possible, early sowing, speed up the sowing schedule, reduce the loss of accumulated temperature. At the same time, fine soil preparation, fine seeding, planting under the seed, and proper shallow sowing are all in place to ensure that all seedlings, seedlings, seedlings, seedlings, and seedlings are strong, lay the foundation for the ear of foot, and strive for stable production and high yield initiative.
The third is to increase the amount of sowing to cover up late. After planting in Huaibei area after the end of October, the basic seedlings per acre should be 300,000 to 350,000, and the sowing amount should be increased to about 20 kilograms per mu. After planting in the middle of November in Huainan, the basic seedlings per acre should be between 220,000 and 260,000. It is advisable to increase the seeding rate to about 15 kg per mu. If the machine is broadcast, narrow the line spacing (about 15 centimeters) accordingly.
The fourth is to stabilize the nitrogen and shift it later to supplement it with fertilizer. Since there are more basic saplings in single-stem stalks, the amount of fertilizers in the early stages should be appropriately reduced to prevent the population from overrunning, and after the number of groups after the jointing period is stable and stable, it is necessary to appropriately increase the amount of nitrogen fertilizers to attack large spikes, and to promote the application of two different types of fertilizers: . In the Huaibei region, the target yield of 450 kg per mu needs to apply 15 to 16 kg of pure nitrogen, and the goal of 400 tons in the Huainan area must be about 14 kg of pure nitrogen per mu. The ratio of nitrogen, phosphorus, and potassium is generally 1:0.6:0.6. Base fertilizers account for 30% of nitrogen fertilizers, 10% to 15% of leaf fertilizer, 10% to 15% of balance fertilizers, and 25% to 30% of fertilizers applied during the 3rd leaf stage, and 30% of flag leaf spikes. The basic recovery ratio of phosphorus and potassium fertilizers is generally 5:5. It is advisable to apply high-concentration compound fertilizers to supplement phosphorus and potassium in the inverted 3-leaf stage.
The fifth is scientific management, which helps to build a large spike. In the early period, the trenches should be strengthened to improve flood control and drought resistance. In the middle stage, high-level control and fall-control agents should be used to prevent lodging. In the later period, pest and disease prevention and control should be strengthened, and attention should be paid to the application of agglutination and weight-increasing agents to protect the leaves and prevent overheating. Increase weight gain.