Greenhouse vegetables pay more attention to

The stubble weeds should be cleaned by a lot of vegetable farmers when they turn to the ground and save their lives, and the stubble and weeds in the shed are turned to the ground. First of all, these stumps and weeds carry many germs and eggs. Turning them to the ground will increase the occurrence of some soil-borne diseases (Phytophthora capsici, tomato wilt, etc.) and whiteflies. The vegetable residue remains in the soil and will produce some self-toxic substances after rot. If the same kind of vegetables are still planted in the lower jaw, it will affect its normal growth. It is recommended that the root system of the plant should be pulled out of the soil as much as possible. The rotten fruit, leaves and weeds inside and outside the greenhouse must also be removed. The stubbles cleared out of the sheds should not be stacked near the sheds, but should be transported to a dedicated place for storage or burial so that pathogenic bacteria, etc., on the filths cannot be introduced into the sheds by wind, rain, insects or people.

Manures must be fully decomposed. Farmers have the following problems when manures are used: First, the time for fresh manure is too short, the toxic substances such as ammonia produced in the manure cannot be converted in time, and the vegetables cause harm after planting; second, manure is applied after soil treatment. , The lack of biological bacteria in the soil, the harmful bacteria that are carried in the manure, etc. may proliferate in large quantities, and the decomposition is not complete, and the problem of burning seedlings is prone to occur. It is recommended that the manure application be determined according to the specific conditions of the greenhouse. If the time for planting the next sash vegetable is approaching, fertilizer can be added after the application of manure to increase the zymogenic bacteria in the soil and accelerate the maturity of the manure; if the squat vegetable is to be planted Still far, with high temperature stuffy shed, the manure can be applied to the soil in advance to kill the pathogens, eggs, etc. carried in the manure to ensure that the manure is fully cooked.

To thoroughly loosen the disadvantages of the soil farmers who fall to the ground, there is a general shortage of plowing and a small range of plowing. First of all, at present, vegetable farmers generally use rotary cultivators. After turning to the ground, they look at the deep and loose soil, but most of the actual rotary cultivating depth does not reach 20 cm. The use of this rotary cultivator to turn the ground will cause the plough bottom to move upwards. The soil permeability decreased, the root growth was limited, and it was not conducive to the growth of vegetables. Secondly, many vegetable farmers only planted and planted trees in order to save time. The ridges were not plowed. Because these ridges were stamped through a long period of time, the soil was firm and limited. The growth of the roots is not conducive to the cultivation of strong trees. It is recommended to use artificial ploughs or shovels to deepen the soil as much as possible. In recent years, there have been a number of small excavators for agricultural use. The depth of ploughing can reach up to 50 cm, which effectively solves the problem of over-cultivation.

Pest control should be in place. Changing dates is an opportune time for pest control, but most farmers often overlook this point when they are on the ground. Now many vegetable farmers share a rotary cultivator, or hire someone else to turn the ground. If disinfection is not carried out before the use of a rotary cultivator, it will spread germs and pests in a greenhouse to other sheds, especially root knot nematodes, which can be passed through machinery. The spread of mud on the soles of the shoes is very harmful. It is recommended that the vegetable farmer disinfects the rotary cultivator and cleans the soil on the machine. In areas where the root knot nematodes are severely damaged in sheds, they should be marked when they are turned to the ground. They should be individually ironed or deep-turned or finally rolled over to avoid the spread of root-knot nematodes.

After many vegetable farmers turned the floor, the vents at the front and top of the greenhouse were opened so that there was no vegetable in the shed and pests would not enter. However, this season is when the pest activity is frequent, and they are likely to enter the shed to lay eggs, which in turn will jeopardize the pods. Experts suggest that pest control nets be set up in time after turning to the ground to prevent outside pests from entering the greenhouse, especially the vents in the front of the greenhouse.

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