Core Tip: Greenhouse tomatoes have high requirements for colonization, not only technically scientific, but also critical in management. How to make tomato "fine" growth in the greenhouse? How to avoid pests and diseases such as dead seedlings and rotten roots? In general, we need to do “seed tube combination”. In this issue, we will explain the key things before and after planting the greenhouse tomatoes for reference.

Trick 1: Tomato colonization technology "cheats"

Before planting, prepare tomatoes for early spring sorghum production. In addition to new greenhouses, there are generally simmered vegetables, and the fields should be cleaned before the land preparation. Fertilization is generally applied to the decomposed farmyard manure, with about 50 kg of superphosphate. At the same time, the soil preparation can be ridged or squatted, and the ridge is generally 50 cm line spacing and 15 cm high ridge. It is generally made into a sorghum with a base width of 1 m, a kneading surface of 70-80 cm, and a height of 15 cm. The ground cover is covered with a mulch. Sorghum mulching covers generally open a small ditch in the middle of the sputum for irrigation under the membrane.

Colonization of colonization parameters generally requires stable ground temperature in the greenhouse. The planting density of early maturing varieties is set at every 40~50 cm line spacing, and 3000~3500 seedlings are planted at 40 cm plant spacing. The medium-ripe varieties are ridge-planted, and each row is planted in a row, and the planting density is about 2,500. It should be noted that the water should be poured at the time of planting, and the film is sealed after water seepage.

Trick 2: Management essentials after planting

Temperature Illumination When the weather is fine in spring, the greenhouse can maintain a high temperature, so there is no need to turn on 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 the sunny night).

The relative humidity in the humidity management greenhouse should be controlled as much as possible from 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 to create a suitable humidity environment. At the same time, it is necessary to maintain ventilation to prevent the occurrence of diseases.

When watering the fertilizer, you should choose clean water to prevent the algae from breeding and block the drip irrigation pipe. After planting, water is properly watered to ensure that the substrate is wet and the plants are not wilted. At the same time, it is necessary to combine the watering and timely topdressing.

The bees pollinate the bees into the shed to ensure that the plants can be evenly pollinated, thereby reducing the occurrence of abnormal and inferior fruit.

Trick 3: The way to kill pests and diseases

First of all, in the production of tomato in the greenhouse, it is easy to breed root-knot nematodes and is devastating. Therefore, it is necessary to ensure that the temperature and relative humidity in the shed are within a reasonable range. In addition, the source of the insect and the environment in which it grows are to be eliminated. Secondly, the disease of spring tomato generally occurs from March to June, such as early blight, gray mold, leaf mold, late blight, etc. can seriously harm tomato.

Control methods: Strictly do the disinfection of the inner frame, drip irrigation system, heating system, cultivation substrate, and other related equipment in the greenhouse, timely remove the weeds in the greenhouse, the residual leaves of pests and diseases, and strengthen the field inspection and observation during cultivation. Pests and pests were found and prevented.

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