How to Plant Tomato in Greenhouse Cultivation Techniques of Tomato in Greenhouse

Sowing time: The sowing time of tomato is about 40 days before tomato planting. Generally, rootstock and scion are sowed at the same time.

Second, sow. Before sowing tomatoes, thoroughly soak the plug with the substrate. Sow 1 seed per hole to accelerate germination, and directly sow about 3 dry seeds. After sowing, cover tightly with vermiculite to fill all holes. Finally, pour water and cover with plastic film.

The next step is management. The surface soil of seeds should be stripped of plastic film in time, and seedlings should be replenished in time after they are in full bloom. Water management of plug soilless seedling is the key to keep the substrate moist.

Grafting method of tomato: Tomato rootstock has 5 true leaves and the stem is about 4 cm thick, which is suitable for grafting. Before grafting, the arch shed should be inserted, the ground should be watered and covered with sunshade net, and grafting should be carried out under sunshade conditions. Generally, splitting method is adopted, and plug seedlings should be grafted with trays. The first step is to sharpen the roots. Use a blade to flatten the growth point of the rootstock, and control the height at about 5 cm. Step two, cut off the scion. Cut the scions from the seedling tray with a blade, usually one by one, to prevent them from wilting. Cut the scion into a wedge shape under the two true leaves at the top of the seedling with a blade, keeping the length of the blade 0.5 ~ 0.8 cm and the section even. The third step is grafting. After cutting the scion, immediately cut the cross section of the rootstock vertically downward by 0.5 ~ 0.8 cm with a blade, then insert the scion, and finally fix it with a grafting clip. Immediately after grafting, put it into the arch shed.

After grafting, it is necessary to shade and keep warm, keep the relative humidity of air in the arch shed about 95%, and the degree and time of shading shall be subject to the seedlings not wilting. Generally, the covering can be gradually removed after 7 days. The temperature is controlled at 26 ~ 28℃ during the day and around 65438 08℃ at night. Spraying 600 times of DuPont clover solution on the leaves after grafting to prevent diseases can be planted 18 ~ 22 days after grafting.