Late rice no-tillage cast has been widely used in southern Hunan. This technology saves time, saves money, and increases efficiency. It is deeply welcomed and accepted by farmers in rural areas. However, late rice no-tillage and seedling transplanting has many factors such as prosperous growth in early stage, shallow distribution of roots, low depth of soil, uneven density, poor management, pests and diseases, etc. It is easy to cause inverted and affect production. Therefore, after no-tillage, late-season rice seedlings are planted, they should take the following measures to prevent lodging.
1. Skillful application of fertilizer First, give a good base fertilizer. Due to high temperature and strong solar radiation during no-tillage and seedling planting of late rice, in order to reduce fertilizer losses and avoid seedlings from producing fertilizer, generally 25% rice compound fertilizer 30 kg to 40 kg urea 10 kg to 12 kg of urea per 667 square meters One day before throwing, spread the field evenly. The second is the right amount of early recovery of nitrogen fertilizer. Late rice no-tillage throwing seedlings fast seedlings, tiller early, the first top dressing should be thrown after 5 days to 7 days, 667 square meters with urea 8 kg to 10 kg combined with herbicide application. The third is to increase potassium fertilizer. In the period of young panicle differentiation and heading, 667 square meters is spread with potassium chloride 8 kg to 10 kg mixed with fine soil, or 667 square meters with potassium dihydrogen phosphate 1 kg to spray 30 kg of water, which can promote sturdy stalks, Improve resistance to falling.
2. Timely field control seedlings Late rice no-tillage seedlings grow fast, the tiller is early and many, should adopt the "time to not seedlings" or "male to unequal" sun field principles, timely control of seedlings. In the field, combined application of potash fertilizer and uniconazole, can inhibit internode elongation, but also make the seedlings between internode thickening, and have good anti-inversion effect.
3. Scientific management of water late rice no-tillage seedlings in the middle and late tube water is the key. From the spike differentiation stage to the heading stage, shallow water irrigation is done until the water is naturally dry and then rewatered. In the grain filling period, dry and wet alternate irrigation methods are adopted. This will not only increase root vitality but also enhance root holding power and enhance lodging resistance.
4. Strengthen pest control The large population of no-tillage and castrated rice in the late rice field will be shaded in the field, which will easily lead to the occurrence of S. japonica, S. sinensis, P. striata, and sheath blight. The serious harm of these pests can easily cause lodging. The prevention and control should be based on the diseases and insects information of the agricultural technology department, select the right pesticides to prevent and cure the damage caused by the damage of the stems, and control the sheath blight can use jinggangmycin 25 grams to 40 grams per 667 square meters; prevention and control II, three The amount of triazophos 100 grams per 667 square meters can be used plus 500 grams of insecticidal double or Ruijin 30 ml to 50 ml or 120 ml of Radix Astragali; the control of rice planthopper can use 30 ml of imatinib per 667 square meters or imidacloprid. 30 grams to 50 grams. When the above agents are used, 60 kg of water must be sprayed and mixed application can be made.
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