Study on Total Control of Tomato 2 + X Nitrogen Fertilizer in Luanzhou City

: Tomato is the main planting variety of facility cultivated vegetables in Luanzhou City. In order to continuously optimize the appropriate amount of tomato nitrogen fertilizer, different total amount control tests of nitrogen fertilizer are set on tomato crops to explore the optimal amount of tomato nitrogen fertilizer in this region and provide a theoretical basis for greenhouse tomato production in the future


Trial design
Conventional fertilization is the fertilization technology used by most local farmers in vegetable production, and optimized fertilization is the local recent high-efficiency or high-yield or suitable vegetable fertilization technology; "X" treatment involves organic fertilizer, phosphorus and potassium fertilizer dosage, fertilization period should be close to optimal management. [3][4]

Test variety: Beautiful pink 15 (Beijing)
Medium variety, unlimited growth form, fruit round or slightly oblate, fan jiang color, single fruit weighs 180-200 grams, are of good quality.highLeaf mildew resistance and viral disease of aphids and whitefly has certain ward off.Suitable for protected area and flourish.

Test soil: Sandy loam
Sandy loam soil particle composition of clay, silt and sand content of soil, sand mean sediment concentration 80%, about 20% of clay soil and sandy loam is between loam and sandy soil.

Test fertilizer:
46.4% Large particle urea in Hebei Ruifeng 51% Potassium Sulfate State Investment Xinjiang Lop Nur Potash Co., LTD 12% Hyperphosphate Tangshan Bonli Jinyin Chemical Co., Ltd Each small area is 8 meters long, 8.5 meters wide, and an area is 68m 2 A total of 5 beds and 10 rows.

Test treatment
The test was carried out on the basis of proper machine fertilizer, organic fertilizer 167kg / 667m 2 , Using a complete random block group design, the design of 5 treatments, the plot area of 68 m 2 There is no repetition.The test treatment contents are as follows: (1) nitrogen-free area; (2) 70% optimized nitrogen application area; (3) optimized nitrogen application area; (4) 130% optimized nitrogen application area; and (5) conventional fertilization.See, for details, [5][6] Table 1 below for each treatment:

Field implementation
Prepare the land on April 1st and apply base fertilizer.On April 6th, 275 trees were transplanted in each community and completed on the same day.Treatment 14 topdressing fertilizer 4 times, respectively May 14, May 24, June 3, June 12; treatment 5 topdressing fertilizer 7 times respectively May 14, May 24, June 3, June 3, June 7, June 12, June 18, June 25, each with watering fertilization.Picking began on July 2nd. [9][10]Test results

Figure 1
Figure 1 Layout diagram of the test community

Table 1
Control Test Scheme of Total Nitrogen Fertilizer in Tomato