(I) Key technical measures in February
Main focus: Drought-resistant seedlings.
1, combined with fertilizer and water, to promote the transformation of seedlings. The mid-to-late February is a crucial period for promoting the transformation and upgrading of wheat seedlings. To make full use of this valuable time, the fertilizer and water strategy of “mixing fertilizers and water and using fertilizers to go with water†should be adopted. There is sufficient supply of fertilizer and water to consolidate the delivery of labor before the year, to accelerate the growth of delivery of spring raw materials, to promote the production of tillers, to accelerate the transformation and upgrade of the seedlings, and to ensure sufficient number of panicles. One is the three types of seedlings that have not yet been watered. The young seedlings are weak, the secondary roots are few, and the population is insufficient. Should immediately drought water, Mushi urea 10 to 15 kg, and promote seedling growth. The second is the three types of seedlings that have been watered before the Spring Festival and are not top-dressed. If the current situation is appropriate, use 10 to 15 pounds of urea per leg. In the field of dry elephants, topdressing and watering were carried out at the same time. Third, the first and second types of seedlings with better seedling conditions, such as the current occurrence of drought, can be applied at the same time, acres of topdressing 10 tons of urea. Fourth, along the Huaihe River in the Huai area of ​​rice, buckwheat, dry conditions should be irrigated, to ditch irrigation is appropriate, should not flood irrigation, so as not to cause poor drainage due to local drainage. Insufficient populations of rice buckwheat should be rained or topdressed with 10-15 pounds of urea after drainage.
For the frozen fields, especially the wheat field where dead seedlings occurred, the ability to absorb nutrients was reduced due to poor root development. The foliar fertilizer or growth regulator should be sprayed as soon as possible after the watering is turned green, so as to make up for the lack of root absorption capacity and promote its recovery as soon as possible. Can be sprayed with 0.2% ~ 0.3% of potassium dihydrogen phosphate solution; or with 25 grams of fulvic acid foliar fertilizer and 35 kg of water spray; or 30 ml of American acres with water and 35 kg of spray; or per mu With Zhuang Fuxing 60 ml of water and 25 kg of spray, spray it again every 10 days. The effect is better before 10 a.m. and 4 p.m.
2, to strengthen pest monitoring and reporting, do a good job of chemical weeding. Focus on forecasting and forecasting of sheath blight, wheat spiders, and seedling mites and other diseases and pests, accurately grasp the trend of pests and diseases, and prepare for prevention and control. We must focus on chemical weeding in the spring, and we must seize the opportunity for wheat to return to green and carry out chemical weeding. Broad-leaved weed-based dry buckwheat, mu with 75% superstar dry suspension agent 1 to 1.5 grams or 20% to make it Long Rong EC 40 to 50 ml watered 40 kg uniform spray. The monocotyledonous weedy rice buckwheat, mu with 10ml of 50ml of Lingling EC, or 6.9% of Hummer, 40 ~ 60ml, and 40kg of water were sprayed before jointing.
3, comprehensively carry out ploughing. The ploughing and ploughing has the effects of storing water, protecting the ground temperature, eliminating weeds, and promoting root-strengthening, especially for the wheat field where the soil compaction is caused by watering. To fully carry out ploughing. When the lyrical condition is appropriate (ground whitening), it is also possible to use a single leg to directly smash and remove the hardened layer. According to the growing trend of seedlings, the depth of cultivator is controlled, and the average cultivator is 3 to 5 centimeters. The three types of seedlings are poor in root growth and should be shallow. The minority of the large seedlings can be properly squatted. The ploughing stage started from the turning green of wheat to the end of the jointing.
(B) The key technical measures in March
The main focus of the attack is to use Pu Shi to add fertilizer and prevent pests and diseases.
1, the main attack joint fertilizer. Jointing stage is a key stage in the development of spikelet and florets in the bipolar differentiation of wheat tillering. Applying topdressing fertilizer has an important role in improving tillering and culling, reducing the deterioration of spikelets and florets, increasing the number of ears per ear and grains per ear. For the first and second types of seedless fertilizers that were not top-dressed in February, the top-dressing fertilizer was applied early in the middle of March in the rain, and the application of urea was 15 to 20 pounds. If drought continues to develop, combine irrigation with topdressing. For plots that have already passed back to Qingfei, the jointing fertilizer can be postponed until late March and the amount should be reduced appropriately.
In view of the fact that the amount of wheat basal fertilizer used in our province is generally adequate, in order to avoid over-fertilization caused by glutinous greening and lodging in the middle and late stages of wheat production, it is important to grasp the total amount of top-dressing fertilizer, the total amount of top-dressing fertilizer, and the total amount of joint-fertilizer. Mu generally should not exceed 25 kg of urea.
2, highlight the prevention and control of pests and diseases. Focus on the prevention and control of wheat sheath blight and wheat spiders. Effectively monitor diseases and insect pests such as wheat scab, powdery mildew, ear blast, and midge, and prepare for prevention and control of critical periods.
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