Overwintering tomatoes are usually planted in early October, and harvesting begins in the middle and late January of the following year. It enters the early fruiting period around the Spring Festival, which is an important stubble for solar greenhouse tomato with complex management technology and high requirements.

Application of new technologies and equipment

1. Application of new-type shed film and insulation to be double-layered

Solar greenhouses have high requirements for greenhouse films and coverings during the winter and long season production. It is recommended to use greenhouse films with outstanding advantages such as good light transmission, good temperature increase, and fast temperature rise. At the same time, it is covered with double-layer insulation cotton to ensure that the minimum temperature in the shed in the low temperature season is about 8-10 °C, to ensure that tomatoes will not affect the growth due to cold damage.

2. Application of straw reactor technology to raise ground temperature

The straw reactor technology has been used in winter greenhouse production significantly in recent years. It can raise the ground temperature by 3 to 4 ° C, and also increases the indoor carbon dioxide concentration, which ensures that greenhouse winter vegetables can grow normally in winter. A common method is to lay straw in the open planting trench and cover it with soil for planting.

3. Apply LED light fill light technology

The haze weather in winter seriously affects the normal growth of overwintering vegetables, so the vegetables must be supplemented with light. LED plant lights usually use blue-red light. Blue is good for vegetative growth and red promotes reproductive growth. The survey results show that the plants under LED supplementary light not only grow significantly better than areas without supplemental light, but also increase fruit set rate and single fruit weight, increasing yield by more than 10% .

4. Apply bumblebee pollination technology

Bumblebee pollination is natural pollination, which is not restricted by plant height, time and date, saves labor costs, and reduces manual pollination workload and labor intensity. More importantly, it can avoid the problem of chemical pollution caused by hormone treatment, can improve fruit quality, and is beneficial to the production of green vegetables.

Zhengzhou Delong Chemical CO., Ltd. is the production base of plant growth regulators in China, which established in 2009, specializing in offering plant protection products. If you have any question, contact us any time.