Points to Consider When Growing Vegetables in Greenhouses
This article provides a brief overview of small experiences in green plant maintenance for growing vegetables in greenhouses. The site editor will introduce the following tips to netizens.
Points to Consider When Growing Vegetables in Greenhouses
Many farmers like to keep more seedlings, thinking that this will lead to higher yields. In fact, due to the low winter temperatures and weak sunlight, photosynthesis is poor, and the synthesis of carbohydrates is even less, which will not increase yields. Many greenhouse growers apply a large amount of fertilizer in the vegetable fields, hoping to achieve high yields. However, excessive fertilization can easily cause fertilizer damage.
Myth 1: Vigorous Plant Growth Indicates Good Health
Many people believe that vigorous plant growth is a good sign. However, excessive water and leaf growth result in shallow roots and unbalanced nutrition, leading to reduced yields.
Correct Approach:It is important to manage the plant's root depth when the vegetables are small, controlling water levels and promoting root growth.
Myth 2: More Fertilizer Means More Yield
Many greenhouse growers apply a large amount of fertilizer in the vegetable fields, hoping to achieve high yields. This excessive fertilization can easily cause fertilizer damage.
Correct Approach:1. For greenhouses that have been cultivated for more than three years, the application of cow dung and chicken manure should be controlled to about 2500 kilograms per mu and not exceed 2500 kilograms. Chemical fertilizers should be reduced to about 50%.
2. For fields with high salt concentrations, it is important to spread cow dung, EM bacteria fertilizer, and humic acid fertilizer to improve the carbon-nitrogen ratio of the soil. The soil should be loosened and ventilated to address salt-induced fertilizer damage.
3. Supplement magnesium, zinc, and boron to balance soil nutrition. This creates favorable conditions for sustainable high yields.
Myth 3: More Seedlings Mean More Yield
Many farmers like to keep more seedlings, believing that this will lead to higher yields. However, due to the low winter temperatures and weak sunlight, photosynthesis is poor, and the synthesis of carbohydrates is even less, which will not increase yields.
Correct Approach:Overwintering vegetables should be planted more sparsely; fully utilize space by planting densely in the early stages, thinning out the plants in the middle stage, and managing the branches in the later stage, ensuring that the leaves are not too crowded.
Myth 4: Frequent Pesticide Use Reduces Diseases and Pests
Many people spray pesticides every 2-3 days during the growth of vegetables, believing that frequent pesticide use can prevent diseases and pests.
Solution:It is essential to apply the right pesticides. We usually choose zinc and copper-based agents, which can kill bacteria, enhance the plant's resistance to diseases and pests, and promote plant growth.
Secondly, we can improve the ecological environment inside the greenhouse by ensuring good ventilation, reducing leaf density, and controlling temperature.
Myth 5: More Harvests Mean More Profit
Some farmers believe that since they have invested in building a greenhouse, it should not be left idle. Therefore, they cultivate more crops, which results in increasingly poor yields and lower profits.
Correct Approach:The best approach is to plant once a year, possibly twice a year, once in spring and once in autumn. For example,茄子 (eggplants), 辣椒 (peppers), 西红柿 (tomatoes), and 黄瓜 (cucumbers) can be harvested again from the old plants. When vegetable prices are low, we can pull out the seedlings and dry the land.
It is also advisable to deeply turn the soil during the summer, allowing rain to leach salt, sun exposure to kill bacteria, mature the soil, and eliminate pests.
Myth 6: Higher Temperature Means Faster Growth
Vegetables grown in greenhouses have specific temperature requirements, generally ranging from 25-32 degrees Celsius.
Too high temperatures increase the plant's respiration, leading to disordered physiological activities and body functions. The vegetables may exhibit excessive growth, and their nutrition and reproductive growth will not be balanced, resulting in reduced yields.
Correct Approach:Install two ventilation openings in the greenhouse, and promptly reduce the temperature. Manage the greenhouse according to the temperature and humidity required for the plant's growth stage to prevent excessive growth due to high temperatures.
Have you understood the detailed introduction to the points to consider when growing vegetables in greenhouses shared in this article?