Colonization of tomato colonies should be scientifically "customized"
Sheltered tomatoes have high requirements for colonization, which is not only technically scientific, but also critical in management. How to make tomatoes grow “fine†in greenhouses, and how to avoid infestation of dead plants, rot and other pests and diseases. In general, “combination of plant and plant†should be done. Now you can explain the key issues before and after the colonization of tomatoes in greenhouses. Reference for reference.
A: tomato colonization technology "cheats"
Pre-plant preparation of tomato early spring production, in addition to new greenhouses, there are generally front-row vegetables, soil preparation before cleaning the pasture. Fertilization is generally applied to mature farmyard fertilizers, with about 50 kg of superphosphate. At the same time, the land can be ridged or ridged, and the ridges are generally 50 centimeters apart and 15 centimeters high. The sorghum is generally made to have a width of 1 meter at the bottom, a width of 70 to 80 centimeters, and a height of 15 centimeters. After the preparation, the mulch is covered. The sorghum mulch film generally opens a small ditch in the middle of the sagger, and is used for irrigation of the ditch under the membrane.
Colonization parameters for colonization generally require that the ground temperature in the greenhouse be stable, and the colonization density of early-maturing varieties should be set at 40 to 50 centimeters for row spacing, and 40 to 30 centimeters for planting at 3000~3500 seedlings. The medium-maturing varieties were planted with ridges, and each ridge was planted with 1 row. The density of planting was about 2,500. It should be noted that the water should be poured when the plants are planted, and the plastic film should be sealed after water infiltration.
II: Management Essentials After Planting
Temperature Light In spring when the weather is fine, the greenhouse can maintain a high temperature, so there is no need to open the heating system. However, in cloudy and rainy weather, the shed needs to be warmed (the temperature is set at 16°C, which is 4°C lower than that at night during sunny days).
Humidity management greenhouse relative humidity should be controlled at 70% to 80%. When the outdoor humidity is high or the temperature is too low, the heating system must be turned on to allow the air to flow and create a suitable humidity environment. At the same time, ventilation should be maintained to prevent the occurrence of diseases.
Fertilizer management Water quality should be selected when watering to prevent the growth of algae and drip irrigation pipes. After planting, water well to ensure that the substrate is moist and ensure that the plants do not wilt. At the same time, it is necessary to top-dress fertilizers in conjunction with watering.
The honeybee pollinates the bees into the shed to ensure that the plants can evenly pollinate, thereby reducing the generation of abnormal shaped and inferior fruits.
Three: The Road to Pests and Diseases
First of all, in the production of tomatoes in a multi-span greenhouse, it is easy to breed root-knot nematodes and it is devastating. Therefore, it is necessary to ensure that the temperature and relative humidity in the booth are within a reasonable range. In addition, the pest source and its growing environment must be eliminated. Secondly, the diseases of tomato in spring usually occur in 3-6 months, such as early blight, gray mold, leaf mold, late blight, etc. can seriously harm the tomato.
Prevention and control methods: Strictly do a good job in disinfection of frame, drip irrigation system, heating system, cultivation matrix, and other related instruments in greenhouses, timely remove weeds, diseases and pests and residues of leaves in greenhouses, and strengthen field inspections and observations in cultivation. Pests and pests are detected and controlled.
For the most common waxy and sweet corn on the market, waxy corn has a higher nutrient content than regular corn, containing 70-75% starch (and almost all straight-chain starch), more than 10% protein, 4-5% fat and 2% multivitamins, with more grains, VA, VB1 and VB2 in protein than rice, with the highest fat and VB2 content. Yellow maize also contains carotenoids, such as rice and wheat. The molecular weight of waxy maize starch is more than 10 times smaller than that of ordinary maize, and the starch makes glutinous rice sticky and soft, softer than ordinary hard maize. It is more than 20% more digestible to eat than regular maize and it is suitable for people with less than perfect teeth. At the same time, it is not suitable for diabetics because of the very high content of straight-chain starch (a polysaccharide).
Waxy maize is also known as sticky maize. The grain has coarse, waxy endosperm, similar to shiny, glassy (clear) grains such as hard and dent maize. Its chemical and physical characteristics are controlled by a recessive gene, which is located on chromosome 9. 100% of the starch in the endosperm is straight-chain starch.
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