"The temperature is high and the vegetables grow fast."
In fact, vegetables have the upper limit of temperature, generally 25 °C ~ 32 °C. If the temperature is too high, the respiration of the plant is large, and the body's operation and physiological activities are disordered, resulting in unbalanced appetite, nutrition, and reproductive growth, and the yield does not increase and fall.
The first solution is to set up two air outlets in the greenhouse and cool down in time. Second, according to the temperature required for the growth of various vegetables and the temperature of each organ during the growth period, it is required to manage and prevent the growth of long-term high temperature, not long fruit.
"The vines grow and show good growth"
Most people think that vine growth is a good crop. In fact, many leafy roots must be shallow and low yields of nutrient insufficiency. Overgrowth of vegetative growth will inevitably affect reproductive growth, and yield will decrease.
The first solution is to control the water-controlling roots at the seedling stage so that the photosynthetic products absorb about 60% of the underground, and the underground and above-ground absorption each account for 50% in the middle and later periods. The second is to ensure that there is a certain amount of assimilation leaf area in the early stage of growth, and to control and promote fruit in the later period to increase the yield.
"Daily fight drugs, the disease will be less."
Many vegetable farmers fight drugs once every two to three days in the late growth period of the vegetables. They believe that drugs can be used to prevent the spread of diseases.
The first solution is to look for the disease, symptomatic spraying, it is best to use copper, zinc, can not only sterilize, but also enhance the ability of plants to resist invasion of bacteria, but also promote crop growth. The second is to improve the ecological environment. Prosperous, poor ventilation, even if the effect of fighting drugs every day is not good, should be sparse. The third is the death caused by soil-borne pathogens, should pay attention to medication prevention at the seedling stage. If the source of the disease is neglected, the disease at the seedling stage, and the late stages of attack, the pathogen has invaded the plant body, and the effect of frequent spraying is not good.
"More times, more natural gains."
Many people believe that investing in the construction of greenhouses must not allow the land to be idle, so the deputy chiefs and the main officials are not effective. The first solution is to make a big fight over the winter. It is better to have a one-year experience and it is advisable to use the spring and autumn for one year. Eggplant, peppers, tomatoes and cucumbers can be used to regenerate old plants at low prices. The second is to leave deep in the summer for a period of time to deepen the land, rain and salt, exposure to sterilization, shed worms, mature soil.
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