The semi-precision seeding technology of winter wheat is a high-yielding, stable production, low-cost, and good production efficiency. The main content is to change the amount of sowing into reasonable sowing volume, change the sowing into machine sowing, change the early sowing and late sowing to appropriate sowing, change the shallow plough to appropriate cultivation, and change the wheat inferior seed and mixed seeds into fine seeds and pure breeds. Change single pests for the prevention and control of soil pests for comprehensive prevention and control of pests and diseases, adhere to the principle of farmyard fertilizers, supplemented by chemical fertilizers, apply basic fertilizers, apply nitrogen, phosphorus, and potassium to supplement the application of micronutrients, and pay attention to return straw; , Improve soil preparation and seed quality, ensure seedlings, and cultivate strong seedlings.
1. Fertility. The implementation of precision sowing and semi-finished sowing techniques must be based on high soil fertility and good soil, fertilizer, and water conditions.
2. Choose good breeds. Selection of tillers with high rate of tillers, high productivity per plant, lodging resistance, compact plant type, strong photosynthetic ability, good yellowing, good disease resistance and good stress resistance are beneficial to fine-seed high-yield cultivation. Such as dwarf resistance 58, Zhengmai 366, Zhoumai 16, Zhoumai 18 can be implemented semi-precision seeding.
3. Fine soil preparation. (1) Apply base fertilizer. The base fertilizer should be organic fertilizer, straw returned to the field, nitrogen, phosphorus, potash fertilizer, fertility and fertility, to meet the nutritional needs of wheat during each growth period. (2) Deepen the tillage layer. Deepen the plough layer properly, break the bottom of the plough, and deepen the living soil. Land preparation requires that the ground be flat, with little rubbish, and pine soil be real.
4. Soil treatment For soil pests and midge pests that are mixed or severely developed in the field, pesticides should be treated before plowing. Use 3% methylisothiphos granules or 3% phoxim granules 2.5 to 3kg per acre. Earth 20 to 25 kg, spread to the surface, plowing into the soil. Full-bleeding wards can use carbendazim or thiophanate-methyl 2.5 kilograms per acre and 15 kilograms of soil to be applied in front of the plough.
5. Suitable for sowing time.
(1) In the area where the pests and diseases are mixed, use a mixture of fungicides and insecticides to prepare seed dressing techniques. Count each amount, and mix the insecticides with air before mixing them with fungicides.
(2) On the basis of ostriches, seeds of a large size, strong vitality, and high germination rate are selected. The implementation of machine seeding requires that the following species be uniform, consistent in depth and depth, and improve the quality of sowing. General sowing depth 3~5cm.
(3) Seeding date When the average daily temperature is 16~14°C, sow semi-winter cultivars should be planted. From sowing to overwintering, it is appropriate to have a cumulative temperature of 650°C or more above 0°C. The suitable sowing date for common half winter varieties is October 5-15, and the suitable sowing date for weak spring varieties is October 15-25 (5).
(4) The amount of sowing should be based on the principle of ensuring a certain number of basic seedlings, the number of tillers before winter, the maximum number of tillers after the year, and the number of acres per mu. Generally, the number of basic seedlings of semi-wintering cultivars is 16-18 million, and the number of basic seedlings of weak spring cultivars is 18-200,000.
(5) Seedlings are replanted immediately after the emergence of wheat. Replanting should be appropriate for this species.
1. Fertility. The implementation of precision sowing and semi-finished sowing techniques must be based on high soil fertility and good soil, fertilizer, and water conditions.
2. Choose good breeds. Selection of tillers with high rate of tillers, high productivity per plant, lodging resistance, compact plant type, strong photosynthetic ability, good yellowing, good disease resistance and good stress resistance are beneficial to fine-seed high-yield cultivation. Such as dwarf resistance 58, Zhengmai 366, Zhoumai 16, Zhoumai 18 can be implemented semi-precision seeding.
3. Fine soil preparation. (1) Apply base fertilizer. The base fertilizer should be organic fertilizer, straw returned to the field, nitrogen, phosphorus, potash fertilizer, fertility and fertility, to meet the nutritional needs of wheat during each growth period. (2) Deepen the tillage layer. Deepen the plough layer properly, break the bottom of the plough, and deepen the living soil. Land preparation requires that the ground be flat, with little rubbish, and pine soil be real.
4. Soil treatment For soil pests and midge pests that are mixed or severely developed in the field, pesticides should be treated before plowing. Use 3% methylisothiphos granules or 3% phoxim granules 2.5 to 3kg per acre. Earth 20 to 25 kg, spread to the surface, plowing into the soil. Full-bleeding wards can use carbendazim or thiophanate-methyl 2.5 kilograms per acre and 15 kilograms of soil to be applied in front of the plough.
5. Suitable for sowing time.
(1) In the area where the pests and diseases are mixed, use a mixture of fungicides and insecticides to prepare seed dressing techniques. Count each amount, and mix the insecticides with air before mixing them with fungicides.
(2) On the basis of ostriches, seeds of a large size, strong vitality, and high germination rate are selected. The implementation of machine seeding requires that the following species be uniform, consistent in depth and depth, and improve the quality of sowing. General sowing depth 3~5cm.
(3) Seeding date When the average daily temperature is 16~14°C, sow semi-winter cultivars should be planted. From sowing to overwintering, it is appropriate to have a cumulative temperature of 650°C or more above 0°C. The suitable sowing date for common half winter varieties is October 5-15, and the suitable sowing date for weak spring varieties is October 15-25 (5).
(4) The amount of sowing should be based on the principle of ensuring a certain number of basic seedlings, the number of tillers before winter, the maximum number of tillers after the year, and the number of acres per mu. Generally, the number of basic seedlings of semi-wintering cultivars is 16-18 million, and the number of basic seedlings of weak spring cultivars is 18-200,000.
(5) Seedlings are replanted immediately after the emergence of wheat. Replanting should be appropriate for this species.
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