Planting management methods of tomato trees in northern China, fertilizer and water management measures of tomato planting in northern China

How to grow tomato trees in the north

1. Timely sowing: The seedling age of winter organic tomato is about 45 days. If it is planned to be planted around November 1, it will be sown around September 15.

2, timely false planting: seedlings have 4 true leaves when the false planting, plant spacing 10×10 cm or 15×15 cm, after living trees timely fertilization and watering, in order to facilitate the root system and seedling robust growth.

3. Preparation of planting area. Organic tomatoes are plowed in time to ensure that the soil is loose and conducive to rooting. Apply enough base fertilizer. Organic tomatoes are mainly pig dung, plant ash, phosphorus and potassium fertilizer, etc. Tomatoes have a large demand for potassium fertilizer, generally applying pig manure 10000 kg, phosphorus fertilizer 20 kg and potassium fertilizer 10 kg per mu as base fertilizer.

4. Hormones are used to protect flowers and fruits. In order to ensure that organic tomatoes ripen, we must strive for early fruit set. Fruit setting such as low temperature (below 15℃) or insufficient light, where the use of hormones to protect flowers and fruits, fertilizer and water to be sufficient, otherwise prone to abnormal fruit.

5. Top at the right time. Winter temperature is low, organic tomato plants grow slowly, should be properly dense planting, plant spacing to 24×66 cm, planting about 3600 plants per mu is appropriate, each plant can leave 3 ears of fruit can be topped, generally double stem pruning, main branch to leave 3 ears of fruit, lateral branch to leave 2 ears of fruit, in the upper part of the ear to leave 2 leaves, you can remove the terminal bud, other pruning bud picking according to the routine.

Fertilizer and Water Management of Tomato Trees in North China

1. Formula fertilization. Small frame cultivation leaves 2-3 ears of fruit, can be in each ear of fruit table tennis size when topdressing once. Elevated cultivation, leaving a large number of ears, can be in the first, third, fifth, seventh ear fruit table tennis size when topdressing once respectively. Combined with watering, 1000 kg of decomposed manure, 50 kg of decomposed cake fertilizer, 100 kg of plant ash, 25 kg of potassium sulfate, or 25 kg of calcium magnesium phosphate fertilizer are applied every mu. It is best to use the above fertilizers alternately. 0.2% potassium dihydrogen phosphate, 0.3% urea solution and 3-5% calcium chloride solution are used to spray leaves once every 10-15 days. Carbon dioxide gas fertilizer is applied to protected cultivation at a concentration of 800-1200 ml/m3.

2. Water management. Water shall be poured thoroughly during planting, tilling and loosening shall be carried out frequently, and seedling slowing water shall be poured once after 5-7 days, and continuous tilling shall be carried out for 2-3 times afterwards. Appropriate squatting shall be carried out according to variety, seedling age, soil quality, soil moisture content and seedling growth condition. Early maturing varieties, older seedlings, aging seedlings, dry soil, sandy soil, squatting period should be short, when the first panicle fruit has the size of pea seeds to end squatting seedlings. On the contrary, it should be longer, and when the first panicle fruit is the size of a table tennis ball, it ends squatting.

Although tomato trees can be planted in the north, they can survive and grow well in general time. However, if tomato trees want to survive in winter in the north, they must winter in greenhouses and regulate the temperature, humidity and light inside. Otherwise it would be very difficult for it to survive.