What is the principle of “4 not upside down†for growing vegetables? Detailed description here
I have been planting vegetables for many years, and I have occasionally heard the principle of “4 not upside downâ€. This is the first time I heard that, but the principle of “4 is not upside down†is also summarized in the process of growing vegetables. Experience, the vegetables produced in this way are not only high in efficiency, but also in quality. The market value is naturally high.
So if you want to plant the dishes well, you have to remember the principle of "4 is not upside down." Now Xiaobian will explain to you some of these principles.
1. The principles of application of organic fertilizers and fertilizers cannot be reversed.
First, organic fertilizer is the mainstay, supplemented by chemical fertilizers, in order to make vegetables high quality and high yield.
Second, organic fertilizer must be decomposed, unfertilized organic fertilizer such as chicken manure, with salt and pests, easy to pollute the soil and affect crop growth.
Third, the application of chemical fertilizers should be avoided. It should be formulated according to the proportion of different shed vegetables.
2. The application rates of phosphorus and potassium cannot be reversed.
During the fertilization process:
First, pay attention to the application of potassium fertilizer, and rationally apply nitrogen fertilizer and phosphate fertilizer, which is especially important after fruit setting.
Second, we must avoid partial application of diammonium phosphate.
Third, it is necessary to rationally apply biological fertilizer to regulate nutrient supply.
3, the order of watering and transplanting can not be reversed
There are vegetable farmers in the watering ostomy and vegetable seedling transplanting in the order of reverse, resulting in dead seedlings.
For example, many vegetable farmers first sprinkle organic fertilizer in the greenhouse, then apply fertilizer, then plow, flatten the ridge to plant the seedlings, and then water. This easily makes the roots of the seedlings lose water, which is easy to cause burnt roots or ammonia poisoning.
If you first water the fertilizer and dilute the fertilizer, it is not easy to produce root burning. Therefore, it is recommended to first water the sputum, then plant the seedlings, and then use the amino acid, humic acid fertilizer solution to fill the roots.
4, prevention of pests and diseases, the order of nutrition regulation and watering can not be reversed
If the watering is in front, and the prevention of pests and diseases and nutrition regulation, it is easy to produce vegetative overgrowth and lack of reproductive growth. The lighter internodes are long, the leaves are thin, the stems are thin, and the heavy ones fall and fall.
On the other hand, the humidity in the shed after watering is increased, which inevitably accelerates the growth of pathogens such as Phytophthora, Pythium, Downy Mildew, and the disease is aggravated.
Therefore, it is recommended to first use drugs to prevent pests and diseases, use inhibitors to regulate growth, and then water and fertilize.
After reading the "4 is not upside down" principle of the above vegetables, friends havetened to see if they have mistaken the order in these processes. Sometimes it may just reverse the order of watering and seedling transplanting. It is possible It causes the roots of the vegetable seedlings to burn, so it is necessary to pay more attention to the process of growing vegetables.
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