It is very hot in June. What should I do to grow tomatoes in greenhouses in June?

Causing sunburn and fruit deformity. If the leaves of the tomato have aged and fallen off a lot at this time, and it is impossible to shade the fruit, it is necessary to use other shading objects to block too much light. Such as tall plants and sunshade nets. After tomatoes are harvested, you should clean the fields carefully. Remove all stems, leaves and fruits and bury them deeply. Avoid the harm of germs to tomatoes planted again in the future. Protect film, dig drainage ditch and prevent rain and waterlogging. The large openings of the upper and lower air outlets can make the air convection in the shed smooth, eliminate hot air in time, and reduce the temperature and air humidity in the shed.

Prevent overgrowth of nutrition, overgrowth of tomatoes, affecting the reproductive growth of tomatoes, overgrowth of plants, leading to flowering and fruiting. Organic fertilizer can be applied on the production line to promote soil aeration, activate tomato roots and improve absorption capacity, thus increasing autumn yield. Prevent and control pests and diseases, and protect tomatoes in greenhouse from passing through the growth period smoothly. Vents are provided with insect-proof nets to prevent pests from entering the greenhouse from the vents and endangering crop growth. Insects entering the greenhouse should be sprayed in time to kill insects. Attention should be paid to the occurrence of leaf mold, early blight, canker, virus disease and other diseases, and the situation of plants should be observed in time. Once found, it should be prevented in time. The biggest impact of continuous high temperature on tomatoes is to reduce production.

Exposure to high temperature during tomato growth period is easy to shorten the tomato growth period and enter the plant senescence period in advance. Especially in the flowering period of tomato, the flower organs of tomato are easy to develop incompletely, the pollen content is reduced, and the fruit cannot be set normally. The output is greatly affected. High temperature exposure will not only affect the yield of tomatoes, but also seriously affect the quality of tomatoes, which is also very unfavorable to growers. Because the expansion speed of tomato fruit will be accelerated in high temperature environment, there is another problem that the photosynthesis speed of tomato will be reduced because of high temperature, both of which will lead to the hollowing out of tomato.

Reducing the light transmittance of the film can play the role of shading and cooling, keep the temperature at a temperature suitable for tomato growth in greenhouse, and ensure tomato pollination and fruiting. Pruning and bifurcation, fine pruning and interruption to prevent excessive growth of nutrients and tomatoes, which will affect the reproductive growth of tomatoes and seriously not cause the decline of flowers and fruits. In autumn, you can choose topdressing organic fertilizer on the production line, which can stimulate the soil, activate the tomato root system, improve the absorption capacity and increase the yield. It is necessary to pick tomato plants, control their vegetative growth, and ensure that the seedlings are pulled out after the fruits are ripe. Control pests and diseases and protect the smooth growth of tomato in greenhouse. Vents should be equipped with insect nets to prevent pests from entering the greenhouse and endangering crop growth.