Do greenhouse vegetables grow faster at higher temperatures?

With the adjustment of the national agricultural policy and the update of production technology, the greenhouse will increasingly show its advantages. However, many vegetable farmers often make wrong judgments and actions on vegetable planting based on intuitive views or immature experience, and there are various problems, including natural and human factors. In order to guide people scientifically and help people avoid problems in the production process, it is believed that more yields can be obtained if a large amount of fertilizer is applied in the greenhouse. The salt content in the soil required for normal plant growth is 0.2% to 0.3%. If the root system exceeds 0.65%, reverse osmosis will occur, resulting in plant death and a natural decline in yield. For plots with high total salt content, more organic fertilizer should be applied to loosen the soil and aerate, thereby reducing fertilizer losses.

Using soilless culture technology, ecological soilless culture technology is based on the theory of plant organic nutrition, with organic nutrient solution and ecological solution as the carrier, which can not only improve soil structure and fertility, but also improve plant rhizosphere environment, enhance metabolism, activate Cells, accelerate growth, improve quality, increase production and income, and improve efficiency. It is believed that many seedlings can produce high yields. Only reasonable and sparse planting can make full use of light, heat, water and air conditions to achieve high yield. Reasonably sparse. In order to make full use of the space, the management methods of dense planting in the early stage, thinning planting in the middle stage and thinning branches in the later stage can be adopted to improve the yield and efficiency. According to the light and heat conditions in different regions, consider LED artificial light to improve the light intensity and length. Frequent dust removal with a new membrane. It is believed that the higher the temperature in the greenhouse, the faster the vegetables will grow. Vegetables have an upper limit on the temperature, generally not exceeding 32 °C, and a single plant can reach 35 °C.

The greenhouse is equipped with an air outlet to cool down in time. Strictly manage the temperature required for the growth period of various vegetables. The use of shading materials can reduce the amount of light in the greenhouse and prevent the temperature in the greenhouse from being too high. Many vegetable farmers say that greenhouses are high-input and high-yield vegetables, so in order to be more productive, they put a lot of fertilizer into the greenhouse vegetable fields. In fact, the salt content of the soil required for normal growth of vegetables is 0.2%-0.3%. When the total salt content exceeds 0.65%, reverse osmosis occurs in the root system, resulting in plant death and reduced yield. In particular, the temperature and humidity in the greenhouse are high, the organic fertilizer decomposes quickly, the effective phosphorus is 2-3 times higher than that in the open field, and the nitrogen volatilization is large, and excessive fertilization is easy to cause fertilizer damage.

In greenhouses where vegetables have been grown for more than 3 years, the amount of decomposed chicken manure and cow manure should be controlled within 2500kg, and the amount of chemical fertilizers should be reduced by about 50%. On the land with high total salt content, more cow dung, humic acid fertilizer and bacterial fertilizer should be applied to improve soil carbon-nitrogen ratio, loosen soil ventilation, dissolve salt, and reduce fertilizer damage. Supplement boron, zinc, magnesium and other trace elements to balance soil nutrition, further reduce input, and strive for sustained high yield. The higher the temperature, the faster the growth. Many vegetable farmers believe that the purpose of building greenhouses is to keep warm, and vegetables grow faster when the temperature is high. In fact, vegetables have an upper limit on the temperature, and the general temperature cannot exceed 32 ℃. If the temperature is too high and the respiration is strong, the physiological activities of the plant will be disordered, resulting in excessive growth, imbalance of vegetative growth and reproductive growth, and the yield will decrease instead. The more seedlings left, the higher the yield. Many vegetable farmers always want to keep more plants when they keep seedlings, thinking that a variety of seedlings can produce high yields. In fact, in winter, the temperature is low, the light is weak, the photosynthesis is poor, and the carbohydrate synthesis is low. Reasonable sparse planting can produce high yields.