Research On Intorduction And Standerdized Cultivation Of Tomato Varieties In Sunlight Greenhouse At Yulin Area Of Northern Shanxi Province

In order to overcome the problem of tomato yield decline caused by TY virus epidemic in northern Shaanxi,introduce new tomato varieties suitable for overwintering in Greenhouse in Yulin area is very necessary.In this experiment,10 internal tomato cultivars with good winter stubble performance were compared and identified.The experiment was carried out in a solar greenhouse in Baijiamao Village of Zhejiaping Town,Qingjian County,Yulin City.The phenological period,botanical traits,fruit characters,disease resistance to TY virus and yield of tomato wara analyzed in this experiment,and the results showed that:(1)The three tomato varieties of Changfeng No.5,Aili and MC111 had stronger disease resistance than the other seven varieties;(2)The yield of Changfeng No.5,Aili and MC111 increased by 27%,25% and 24% respectively compared with the control fruit,and the appearance quality of the fruit was the flavor quality is better,the shelf life is longer,and the commercial traits are excellent.It is suitable for popularization in the solar greenhouse in Yulin,northern Shaanxi.(3)The three tomato varieties MC112,M317 and Shuangfei 2018 have large leaves and strong vegetative growth.It is cultivated in the greenhouse in winter,but the fruit of them has good hardness,uniform fruit color,and is resistant to storage and transportation.Tomato cultivation in Solar Greenhouse in Yulin area should select varieties with high quality,high yield and disease resistance.In the process of standardized cultivation,seedling cultivation by hole tray after seed disinfection,the seedlings must be done before planting.In the process of land preparation,sufficient base fertilizer should be applied.We adopted wide and narrow row planting,and watered the seedlings in time after planting.By strengthening the daily management of temperature,humidity and water and fertilizer,to guaranteed the healthy growth of plants.In winter and spring season,tomatoes were watered every 7-10 days.Urea and potassium fertilizers 10-15 kg,or ternary compound fertilizer 20-25 kg,were topdressed with water at the time of fruit setting per panicle.Potassium dihydrogen phosphate was sprayed in combination with pesticides for Disease Control in the middle and late stages.When the plant grows to 30 cm,it began to hang vines and single-pole pruning.After the first ear is ripe,the lower old leaves and diseased leaves should be removed in time.Remove the growing point after leaving 5 spike fruits.With the decrease of external temperature,it is necessary to cover the thermal insulation quilt in time during the later growth period to ensure the night temperature between 12 and 15 degrees Celsius.Spray regularly.Chlorothalonil was spray every 10 days,to prevent the occurrence of leaf diseases.Harvesting was carried out according to variety maturity.The standard for harvesting is bright skin with moderate hardness,and the skin color can be harvested from pink to red.