Key points of cultivation techniques for upland rice
Upland rice is usually cultivated directly in dry land. It is especially suitable for planting in low-lying land. It does not need water layer for a lifetime. It relies on natural rainfall or rice planted with appropriate amount of water when drought occurs to a certain extent. Its cultivation management is similar to that of wheat. The main points of cultivation techniques for upland rice are as follows: one is to sow seedlings, the other is to control weeds in the field, and the third is to support all kinds of cultivation techniques. First, the variety selection. For high yields of upland rice, it is necessary to use varieties suitable for dry cultivation. The requirements are: (1) the growth period should be moderate, usually the number of birth days is 10-15 days shorter than the local main rice varieties; (2) the top of the young shoots is strong, so that the emergence is rapid and the growth is consistent; (3) the drought resistance is stronger, in comparison It can grow normally under drought conditions; (4) It has strong disease resistance, especially against rice blast and flax leaf spot; (5) good yield and excellent rice quality. At present, the varieties of upland rice suitable for planting in Liaoning are Tancheng No. 8, Danaodao No. 1, and Ganshui No. 3. Second, the land preparation. Choose dry land or paddy fields with low water content, mountain infiltration field or water retention and fertilizer with good irrigation conditions, moderate softness and ph value below 7.5. The quality of the land preparation must be strictly required by high standards, reaching the level of flat, soil, and no dark soil, without roots. It is better to use the autumn tillage (or 耙) spring rotary tillage. Land plots that have been replanted from paddy fields must be ploughed and sown in the previous year to prevent large clods when planting. Third, timely planting. In order to ensure the seedling preservation seedlings, the seed is selected before seeding, and seeded with seed coating agent or seeded with methyl isoflavin to prevent underground pest damage. Sowing time is the same as local corn. The seeding rate is 7.5 kg/mu. The sowing method is generally carried out by flat laying, with a line spacing of 30 cm, sowing after ditching, the ditch depth is 5 cm, the broadcasting width is 6 cm, and the covering soil is 2 cm thick. Press (step) on the seeding and after covering the soil. Mechanical serialization can be carried out in conditional areas. Fourth, heavy application of base fertilizer. The cultivation of upland rice must master the principle of heavy application of base fertilizer and supplementary application of top dressing. The base fertilizer is generally applied to the farmer's fertilizer of 2000 kg/mu. After the ditch, the nitrogen, phosphorus and potassium ternary compound fertilizers are 25-30 kg/mu, and the long-acting ammonium bicarbonate is 30 kg/mu (or urea 15 kg/mu). Micro-fertilizer 2 kg / mu. When concentrated fertilization, seeds and fertilizers should not be in direct contact, and soil should be separated. Conditional areas can be combined with rotary tillage to implement full-scale fertilization. The topdressing depends on the situation. During the tillering period, depending on the growth, the urea should be 7.5-10 kg/mu. For late maturity plots, potassium dihydrogen phosphate is sprayed once every 7 days after the heading, and the dosage is 0.2 kg/mu (30 kg for water), which is usually sprayed twice. For the later de-fertilization plot, urea can be added 1 kg/mu when spraying potassium dihydrogen phosphate. 5. Water management. In addition to the use of natural rainfall and low-lying groundwater, it is generally not possible to fill the water. In severe drought, artificial irrigation should be provided, the number of irrigations and the amount of water, depending on the soil water content and the water requirement of the upland rice. Except for the soil drought before sowing, it should be filled with water, and it is generally not watered during the seedling period. After tillering, when the rice plant is subjected to drought or leaf wilting, it should be replenished in time. Rice plants in the panicle differentiation stage, heading stage and grain filling stage require large amounts of water and are sensitive to water, which is also an important period for determining yield and quality. Generally, the water is 2-3 times in the peak period of the drought and rice production, which can increase the yield by 20-30%, and the chalkiness rate is reduced. Sixth, to prevent weeds. The key to the success of upland rice production is to control weeds in the field. Depending on the type and base of weeds, different herbicide formulations are used. Generally, the application is 2 times. The first time is the closure of the chemical soil, that is, before the seeding (usually about 7 days after sowing), the amount of butachlor 0.3 kg/mu and It is 0.3 kg/mu plus dimethyl tetrachloride 50 g/mu, and sprays 75 kg of water. (The amount of water must be increased when the soil is dry. This is an important part of determining the effect of blocking the drug and should be highly valued). In order to improve the sealing effect of the medicament, it is necessary to crush the surface clods with tweezers before spraying to facilitate the formation of the film. The second time is the treatment of weed stems and leaves. When the seedlings are 2 leaves, select sunny days to dilute with butachlor 0.2 kg/mu and kill the king 25 g/mu, or use butachlor 0.2 kg/mu. Add 1.5 kg/mu to the enemy and spray 50 kg of water (the plot with few weeds in the past year, or the second dose). If necessary, supplemented by manual weeding. Seven, prevention of pests and diseases. Seeding with seed coating or seed dressing with methyl isoflavin to control underground pests (lowly squatting should pay special attention to controlling underground pests). After emergence, if there is any hazard, you can use 0.25 kg/mu of trichlorfon and 20 kg of fine tidal soil. Mix well and sprinkle it on the surface. About 3 days before the break of the rice ear, use a fungicide (also known as copper succinate or copper fungus) 0.1 kg/mu for 40 kg of water, or 5 days before the rice ear break to the heading stage, with 12% of the song. The sputum is 50 grams/mu and sprays 40 kilograms of water to prevent rice smut. Other pest control is the same as rice. Canned Pear In Syrup Half,Pear In Syrup Half Canned,Pear In Syrup Tin,Pear In Syrup Canned ZHANGZHOU TAN CO. LTD. , https://www.zztancan.com