There are many tips for planting vegetables in greenhouses. Pay special attention to the "four taboos" to avoid or reduce losses.
One bogey is too dense
Due to the relatively large investment in greenhouse facilities, when vegetable cultivation wants to increase production by increasing planting density and other measures to improve economic efficiency, practice has shown that it is unscientific.
Because there is sufficient water and fertilizer in the greenhouse, high humidity, and high temperature, the growth potential of the same variety in the greenhouse is strong, and WeChat searches the vegetable farming circle to pay attention. High planting density often causes field canopy closure, poor ventilation and easy to induce disease. Therefore, the light intensity of the same variety is relatively poor compared with the open field, and the planting density should be smaller than the open field.
Two bogey ignore micro-fertilizer
Some vegetable farmers often pay attention to the application of a large number of elements, contempt or no supplement of trace elements at all, it is easy to induce physiological diseases.
Vegetable fertilization should be based on the principles of improving soil fertility, reducing nitrate content, improving vegetable quality and increasing yield. Mainly based on organic fertilizers, promote formula fertilization, achieve nitrogen control, phosphorus stabilization, and potassium increase, promote the use of bio-organic fertilizers, compound fertilizers, special fertilizers for vegetables, and targeted application of micro-fertilizers. WeChat search for vegetable farmers. Nitrogen fertilizer should be used in an appropriate amount at the right time, but the amount of fertilizer is not applied. The application of chemical fertilizers is prohibited 20 days before harvest.
Three bogey abuse plant growth regulator
Plant growth regulators play a large role in regulating vegetable growth, promoting rooting, controlling sex differentiation of melons, preventing falling flowers and fruits, etc., so they are widely used in various vegetables such as melons, beans, green leaves, eggplants, etc. .
There are often problems in the production that the concentration is too large, the period of use is inappropriate, or repeated use multiple times, causing losses to vegetable production. If the concentration of fruit setting is too large during the low temperature period, it will easily lead to the occurrence of deformed fruit. Therefore, in the case of understanding its mechanism of action, master its concentration, period of use, frequency of use, etc. Non-pollution vegetables and green vegetables are generally not advocated for consumption, while organic vegetables are prohibited.
Four bogey
Because of the good benefits of a certain crop, growers often plant a crop in the field year after year, so that the fertility cannot be restored, which eventually leads to aggravation of various diseases, lower yields, and lower quality.
Continuous cropping of vegetables of the same family is generally avoided, and the interval between continuous cropping of the same family of crops is at least two years. In the greenhouse, due to the lack of severe winter and intense heat, the eggs of the bacteria and insects multiply quickly and in large numbers, and it is necessary to implement crop rotation. The general rotation period is 3 to 4 years. WeChat searches the vegetable farming circle for attention. Rotating crops in principle is based on a high-yield and high-efficiency crop. Rotating crops should be beneficial to control pests and diseases, improve soil fertility, pay attention to the intergrowth between organisms, and try to make the previous crops and adjacent crops play mutually beneficial or partial effects. It can also use the synergistic effect of crops and weeds to control the occurrence of diseases, pests and weeds, thereby achieving the purpose of high yield and high efficiency of vegetables.
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