The latest watering method of greenhouse tomato in spring

In recent years, with the greenhouse vegetable planting model week, more and more vegetables have entered the greenhouse, in which tomato is inevitable, tomato needs more water in the growth process, so we should pay special attention to watering when growing tomato in the greenhouse. So how to water greenhouse tomatoes in spring? Come and have a look with the editor.

1. Watering according to the growth period

Tomato in the germination period requires soil relative humidity of about 80%, because seeds need to absorb a lot of water in the process of germination, seedling stage requires soil relative humidity of about 60%, at this time to control moisture, conducive to root growth. However, if it is too dry, it will also affect flower bud differentiation, generally control watering after planting, but should not be excessive, the minimum should not be less than 60%. Generally speaking, the tomato is watered while planting, and the slow seedling water is watered again after planting for 3-5 days, until the fruit egg yolk is watered again. With the growth and development of the plant, if the number of fruit is large and the ventilation rate increases, the transpiration will also increase. At this time, the humidity should be controlled at about 75-80%, and the amount of water and times of watering should be increased.

2. Watering according to stubble

Greenhouse tomatoes cultivated in early spring should be watered in time after fruit setting in order to meet the water demand in the period of water. Winter-warm overwintering tomatoes generally irrigate enough planting water in October, ploughing and hoeing in time to preserve soil moisture, until there is no need for watering under special circumstances before fruit setting, watering is mainly based on small water, so as to avoid a substantial decrease in soil temperature, and timely watering should be done after fruit setting to meet the water demand of the fruit.

3. Watering according to the growth

The leaves of the plant are dark green and glossy, and the heart leaves stretch, which is a uniform and appropriate performance; if the heart leaves are wrinkled, the leaves are dark green, and there are mild leaf sagging symptoms in sunny days, then it is lack of water and needs timely watering. The heart leaf is overstretched, the leaf is large and thin, and the leaf surface spits too much water, which is the performance of too much water, so we should control the water to prevent the growth.

4. Watering time

Watering time should also be fastidious, growth period watering should choose sunny morning, ventilation and drainage after watering, should not be watered in the afternoon, evening and rainy days, watering in the afternoon and evening, the humidity in the shed is high, it is easy to cause the breeding of diseases and insect pests. The humidity is high on cloudy and rainy days, and if you continue to water it, it will cause waterlogging. Do not water at noon, the temperature is high at noon, watering will cause a great change in ground temperature, affecting the physiological function of the root system, other seasons should choose afternoon watering, which can effectively reduce the ground temperature.

The above is the greenhouse tomato spring watering method introduction, hope to help you, want to know more related knowledge, please follow us.