Rice ridge cultivation
Rice ridge cultivation is a new scientific farming technique. Based on ridge water and fertilizer control technology as the core, with ridge for layered fertilization as the key, water, fertilizer, light, and heat comprehensive technical assembly supporting the sustainable development of high quality and efficient cultivation techniques. The ridge cultivation has increased soil surface area for heat, enhanced soil permeability, significantly improved physical and chemical properties such as soil, water, and gas, resulting in a significant increase in water temperature and soil temperature. Therefore, the seedlings are robust, the roots are well developed, and the plants are resistant to stress and disease. Sexuality has increased, stem strength. Increased, the plant type tends to be reasonable, forming high-yield traits. In the selection of ridge cultivation methods, it is also possible to apply drought-resistant varieties for water-saving irrigation and increase income. This cultivation method is not only suitable for paddy fields, but also suitable for cultivating plants in paddy fields, lack of paddy fields, and sufficient irrigated land. First, nursery 1. Select rice varieties with strong drought resistance, such as Wenyu 302. The nursery program is the same as other rice, emphasizing thin seeding seedlings. Use less than 20 kg per hectare. Nutritional soil fertility should be sufficient. 2. Sowing should not be late. The local temperature stability through 6 °C can be sown. In Siping, Jilin Province, for example, the general sowing time is in late March. Seedlings are better with greenhouses. 3. When the seeding rate is less than 150 grams of buds per square meter, no ventilation may be provided before 3.5 leaves so as to increase the accumulated temperature. 4. Do not do not water, water will be drenched, try to control the number of watering, to reach the soil moisture tube seedlings, in order to facilitate the root Jianmiao. 5. When the seedlings are applied for the first time, they are poured every 5 to 7 days. The amount of fertilization is determined by seedlings. Generally, the amount of fertilizer applied per square meter is less than 50 grams of ammonium sulfate for the first two times, and 70 to 100 grams each time is appropriate. Wash the seedlings with clear water after dressing. 6. Transplanting seedlings standard: age 40 to 50 days, leaf age 4.5 to 5.5, 1.5 leaves more than 2 tillers. Strong and consistent growth. Second, land preparation 1. The land is turning over and falling in spring, finely crushed and flattened. Each hectare applied EM fermented fermented fertilizer 30 to 50 cubic meters. It is better to apply ridges sooner rather than later. 2. Stratified fertilization when ridged, with nitrogen, phosphorus, potassium content of 15% each of three yuan or multiple compound fertilizer 250 kilograms. 100 kg of urea is applied to the ridge bottom (preferably to measure soil fertilization). The first ploughing soil covers the second layer of fertilizer after applying the fertilizer. Ammonium sulfate 100 ~ 150 kg per hectare, bio-phosphorus bacteria 20 ~ 40 kg (per gram of active bacteria containing more than 200 million). Water retaining agent 10 kg, mixed uniformly applied to the second floor. A certain amount of multiple micronutrients should also be applied depending on the soil conditions. 3. The second ploughing soil will cover the second layer of fertilizer to suppress it. After the suppression of the ridge, the ridge width is 60 cm. The basal surface fertilizer is equidistant between the middle-level fertilizer and the ridge roof, both being 5-6 cm, and the ridge roof is 20 cm wide. The entire field after ridging should be kept flat, and the standard of water depth should be used after irrigation. Third, transplanting rice should be timely transplanting, not too early, but not too late. In the northeast, it is usually appropriate to plant transplants 1 to 2 days after the appearance of local final frost, and transplanting can also be performed with reference to the transplanting time of local rice. 1. Before transplanting, fill the ridge with water. The water surface and ridge height can be planted and transplanted. 2. Transplanting density: double rows on ridges, spacing 10 cm, hole spacing 17 cm, about 20 holes per square meter (weak varieties can be properly encrypted), 2 to 4 seedlings per hole. 3. Transplanting standards: uniform, straight, homogeneous, non-sagging, no floating seedlings. 4. Field management 1. Weeding: After transplanting the seedlings for 3 days, apply botany 60% butachlor 750 ml and 10% wettable powder from 90 to 120 g of the agricultural wetland powder per hectare. See also other local weeding techniques. 2. Fertilization: After transplanting, we can apply ammonium sulfate to 100-150 kilograms per hectare at the same time as the herbicide. After that, 500 times of EM dilution or other biological liquid fertilizer was sprayed on each foliar of Baobao (45 days before full bloom), booting (25 days before full bloom) and grouting (15 days after full bloom). 3. Irrigation: According to the law of rice water demand, apply the following water-saving irrigation techniques. (1) Deep water returns green after transplanting. The water layer is preferably 3/5 or 2/3 of the seedling height. After 3 days of deepwater irrigation, the sunny field was selected for 1 to 2 days. (2) Irrigation after drying in the field is better than 2 to 4 cm water layer above the ridge surface to promote early emergence of the seedlings. (3) shallow wet and shallow irrigation, stop watering and baking at the end of effective delivery. (4) The irrigation depth during the booting stage is 4 to 5 cm above the ridge surface to the grain filling stage. (5) Irrigation dry, wet, wet, and mainly wet. (6) The main irrigation period is dry, wet, wet, and dry.
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