The amount of irrigation and the amount of fertilizer to be applied should be in accordance with the fertigation system proposed by the experts. In the production process, the amount of irrigation and the amount of fertilizer applied can be precisely controlled. For individual households lacking these conditions, as long as the chemical fertilizer concentration is controlled to be below the safe concentration (general 0.07% in the seedling period and no more than 0.2% in the later period), the irrigation depth is controlled within the root layer (generally no more than 10cm Deep), and complete the amount of irrigation and fertilization in each growth period, the specific number of irrigation and fertilization can be flexibly mastered.
Water-saving and fertilizer-saving methods for tomatoes in greenhouses and wintering management regulations
First, saving water and fertilizer
Fertilizer: From the perspective of cost-saving reduction of input and fertilization efficiency, 10,000 kg of chicken manure, 50 kg of urea, and 50 kg of ternary compound fertilizer are used per acre, which is the optimum amount of fertilizer for fruit and vegetable crops grown in greenhouses.
Water saving: With drip irrigation, the relative soil moisture content is 80%, which is 70.4% more than that of conventional furrow irrigation. This is of great significance for the development of vegetable facilities in the saline-alkali areas where agricultural water is extremely lacking.
Second, the main technical regulations
1. Introduce fine varieties. Choose middle and late ripe tomato varieties that are resistant to low temperature, low light, disease resistance, high yield and good quality.
2. Nursery, colonization. The tomato seeds were soaked in water at 55°C for 10 minutes, then slowly lowered to 25°C to 30°C and soaked for 5 hours. Remove the drain and prepare the seedlings. When the seedlings are 5-6 leaves, they are planted at a density of 2,000 plants per acre.
3. Water and fertilizer management. With drip irrigation, when the relative soil moisture content is less than 80%, watering is performed to a relative moisture content of 100%. The results are generally topdressed once every 20 days or so, and each topdressing amount can be controlled at 5 to 10 kg of urea per mu and 5 kg of compound fertilizer.
4. Temperature management. After entering the result period, do not make the minimum temperature in the shed lower than 8°C. In the daytime, it may be properly ventilated if it exceeds 30°C.
5. Plant adjustments. Single stalks are used for pruning to remove lateral branches at any time to ensure ventilation and light transmission in the field. Can be topping after the 5 ear fruit, in the upper part of the ear to select a strong lateral branch to replace the original main branch, can be left to 4 to 5 ear topping.
6. Keep flowers and preserve fruits. Spray the flowers with the appropriate concentration of tomato spirits to ensure the fruit setting rate and artificial pollination.
Water-saving and fertilizer-saving methods for tomatoes in greenhouses and wintering management regulations
First, saving water and fertilizer
Fertilizer: From the perspective of cost-saving reduction of input and fertilization efficiency, 10,000 kg of chicken manure, 50 kg of urea, and 50 kg of ternary compound fertilizer are used per acre, which is the optimum amount of fertilizer for fruit and vegetable crops grown in greenhouses.
Water saving: With drip irrigation, the relative soil moisture content is 80%, which is 70.4% more than that of conventional furrow irrigation. This is of great significance for the development of vegetable facilities in the saline-alkali areas where agricultural water is extremely lacking.
Second, the main technical regulations
1. Introduce fine varieties. Choose middle and late ripe tomato varieties that are resistant to low temperature, low light, disease resistance, high yield and good quality.
2. Nursery, colonization. The tomato seeds were soaked in water at 55°C for 10 minutes, then slowly lowered to 25°C to 30°C and soaked for 5 hours. Remove the drain and prepare the seedlings. When the seedlings are 5-6 leaves, they are planted at a density of 2,000 plants per acre.
3. Water and fertilizer management. With drip irrigation, when the relative soil moisture content is less than 80%, watering is performed to a relative moisture content of 100%. The results are generally topdressed once every 20 days or so, and each topdressing amount can be controlled at 5 to 10 kg of urea per mu and 5 kg of compound fertilizer.
4. Temperature management. After entering the result period, do not make the minimum temperature in the shed lower than 8°C. In the daytime, it may be properly ventilated if it exceeds 30°C.
5. Plant adjustments. Single stalks are used for pruning to remove lateral branches at any time to ensure ventilation and light transmission in the field. Can be topping after the 5 ear fruit, in the upper part of the ear to select a strong lateral branch to replace the original main branch, can be left to 4 to 5 ear topping.
6. Keep flowers and preserve fruits. Spray the flowers with the appropriate concentration of tomato spirits to ensure the fruit setting rate and artificial pollination.
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