Tomato fertilizer-saving and water-saving technology in warm winter greenhouse

Fertilizer saving: considering the cost saving, input reduction and fertilization efficiency, 10000 kg of chicken manure, 50 kg of urea and 50 kg of ternary compound fertilizer are applied per mu, which is the best amount of fertilizer for fruits and vegetables in winter warm greenhouse in Shandong coastal area. Water saving: drip irrigation is adopted, and the soil relative water content is 80%, which can also save water by 70.4% compared with conventional furrow irrigation, which is of great significance for the development of vegetable facilities in saline-alkali areas where agricultural water is extremely scarce. Main technical specification: ① introduces excellent varieties. Israel 144, a mid-late maturing tomato variety with low temperature tolerance, weak light tolerance, disease resistance, high yield and good quality, was selected. ② seedling and colonization. The tomato seeds were soaked in 55 ℃ water for 10 minutes, then dropped slowly to 25 ℃ ~ 30 ℃, and then soaked for 5 hours. Remove and drain the water and prepare to sow and raise seedlings. When the seedlings had 5 or 6 leaves, the planting density was 2000 plants per mu. ③ water and fertilizer management. Using drip irrigation, when the relative water content of the soil is less than 80%, watering to 100% of the relative water content. The result period is generally topdressing once every 20 days, and the amount of topdressing can be controlled at 5kg of urea and 5kg of compound fertilizer per mu. ④ temperature management. After entering the fruiting period, do not make the minimum temperature in the shed lower than 8 ℃. It can be properly ventilated if it exceeds 30 ℃ during the day. ⑤ plant adjustment. Single stalk pruning is used to remove lateral branches at any time to ensure ventilation and light transmission in the field. It can be topped after 5 ears, and a strong lateral branch can be left under the upper ear instead of the original main branch, and 4 or 5 ears can be left at the top. ⑥ protects flowers and fruits. Spray flowers with appropriate concentration of tomato spirit to ensure fruit setting rate and cooperate with artificial pollination.