Growing vegetables in greenhouses does not make money. Let's look at these eight reasons.

Lack of advance planning

Many people think it's easy to plant greenhouses. They began to invest in building greenhouses as soon as their minds were hot, and there was no need for pre-market research. What should they plant after the greenhouse is really built? How to plant it? How much do you sell it for? It has become a big problem. At this time, slowly explore, time, manpower and capital costs will make you lose money.

Lack of technology

Greenhouse planting is a technical work that needs to comprehensively consider environmental factors such as plant growth temperature, light and moisture. It is definitely inappropriate for many growers to refer to the experience of open-air planting for management. Especially in plant protection, the requirements for plant protection in protected areas will be higher, and many grass-roots agricultural technicians are not very comprehensive, which will easily lead to production reduction and quality decline due to technical problems.

Blindly follow the trend

The vegetable market is changing rapidly, so it is difficult to predict in advance. So many growers choose to plant with the wind. They planted it last year to make money, and they will plant it this year. Everyone thinks so, which leads to a large number of similar vegetables on the market, which leads to oversupply and low prices.

Too many varieties

Many greenhouse growers have not formed their own characteristic products, and adopt the mode of multi-category and multi-variety planting at the same time, and some even grow two or three varieties of vegetables in one greenhouse.

Emphasize "quantity" rather than quality

"How many kilograms per mu?" For a long time, this problem has been a standard to measure the planting benefit. It seems that high yield means good benefits, so some growers do not hesitate to invest in costs and apply heavy fertilizers and drugs to increase yield. However, with the improvement of people's living standards, consumers demand higher and higher quality vegetables. The price of the same variety of green organic vegetables is several times higher than that of ordinary vegetables.

Wrong experience

NO 1。 Vegetables grow rapidly at high temperature.

Some growers think that the higher the temperature, the better, and the greater the absorption of photosynthesis! However, the temperature of vegetables has an upper limit, generally at 25 ~ 32℃. When the temperature is too high, the respiratory function is great, the physiological activities are disordered, the plants grow white, the nutrition and reproductive growth are unbalanced, and the yield decreases.

NO2。 It is good for plants to thrive.

Many people think that it is a good thing for plants to grow vigorously. In fact, there are many leaves and shallow roots, and the malnutrition yield is low. Excessive vegetative growth will inevitably affect reproductive growth, but the yield will decrease.

Third. More benefits are beneficial to stubble times.

Some growers who have just set up greenhouses think that the land can't be idle, the second crop follows the main crop, and the main crop is covered with the second crop many times, which leads to serious problems such as soil salinization and soil hardening, and the actual benefits are getting worse year by year.

The idea of saving.

Some omit the fermentation process of manure, resulting in burning seedlings and roots; In order to save labor, some people mix a variety of disease-preventing, insecticidal and foliar fertilizers in a bucket of water, which not only damages the fertilizer but also increases the cost; Some bought seemingly high-quality seedlings to save money, and they were cheated as a result.

lack vision

Open-air farming, eating according to the weather and facility agriculture are also affected by natural conditions. Every year, a large number of vegetable greenhouses are damaged or even scrapped in extreme weather, and many growers reduce production due to large-scale pests and diseases.