Newly built greenhouses have less pathogens, but the new greenhouses are all virgin land, which needs to be fertilized reasonably to activate the soil. After the new shed is built, it is necessary to plan in advance, give full play to the advantages of the new shed, make up for the shortcomings, and delay the occurrence of repeated cropping problems. For this reason, this issue of the "greenhouse steward" will talk to the vegetable farmers who have just started planting the greenhouse about the management of the new shed.
Make good use of base fertilizer to make the land "live"
The new shed has a larger amount of fertilizer to supplement the soil organic matter, improve soil permeability, and improve the production performance of the raw land. After the winter, the temperature is low, the new shed has fewer microorganisms, and the manure fermentation is slow. It is not recommended to use a large amount of unripe organic fertilizers such as rice husk manure, dry chicken manure, straw, etc., especially in places that are still not ready for planting after winter As the ground temperature decreases, manure fermentation is slow, and more attention should be paid to the ratio of base fertilizer, which should be mainly decomposed manure or biological organic fertilizer. Among the base fertilizers, manure occupies a dominant position. It is recommended to choose fermented chicken manure. It is appropriate to use 3000~5000 kg per mu, with 50~100 kg high potassium compound fertilizer.
The soil has less pathogenic bacteria and beneficial microorganisms. Vegetable farmers should be combined with biological bacterial fertilizer during fertilization and used with fermented chicken manure to increase the number of beneficial bacteria, activate the soil, and improve soil fertility. At present, there are a large number of bio-fertilizers on the market, and bio-fertilizers with guaranteed quality should be selected for one-time use to prevent diseases and promote roots. After fertilization, pay attention to deep plowing and watering immediately, level the land in the shed, and prepare for planting.
Do a good job of protection, the advantages of the new shed "light up"
The most important advantage of the new shed is that there are fewer germs in the shed, especially in the soil, which is more clean. Therefore, after the new shed is built, vegetable farmers should pay special attention to cutting off the introduction channel of root diseases and insect pests to avoid the occurrence of root diseases and insect pests.
Disinfecting farm machinery and tools should be done well. Farm machinery and tools are an important channel for the spread of root diseases and insect pests, especially root knot nematodes, which are mainly spread through farm machinery and tools. Before turning agricultural machinery and tools, vegetable growers should clean up the remaining soil on agricultural machinery and spray tires, rotary tiller blades and other parts with abamectin 1000 times, carbendazim 500 times, etc., to protect and avoid agricultural machinery Possible pathogens, eggs, etc.
Prepare special tools for shed management. Special shoes should be prepared in the shed and replaced before entering the shed; the hoes, scissors, etc. used in the shed should be exclusively used. Special tools can avoid the mutual transmission of pathogenic bacteria and reduce the probability of diseases entering the shed.
Pay attention to the diseased body to treat the vegetable stubble after changing the stubble, and transport it to a place away from the shed for treatment, especially the root system, diseased leaves, etc., to prevent pathogenic bacteria from still gathering and spreading around the shed.
Through the above simple preventive measures, the probability of plant diseases and insect pests, especially root plant diseases and pests being introduced into the shed can be greatly reduced, and the normal use time of vegetable sheds can be prolonged. Increase the yield and quality of vegetables, killing two birds with one stone.
Set up a complete set and "dig out" the performance potential
To grow vegetables in a greenhouse, it is not enough to build a shed. More supporting facilities are needed to give full play to the production performance of the greenhouse. In these respects, many new vegetable production areas lack awareness. In most sheds, the film is extremely dusty, especially the large sheds on both sides of the road, which are mostly covered with a thick layer of dust, and the light in the shed is greatly affected.
On the basis of choosing a high-quality non-drip film, setting up a dust removal cloth strip can effectively clear the dust on the shed film, and has a significant effect on improving the light in the shed in winter. The dust-proof belt can be made of long cloth strips, etc., one end is fixed to the transverse steel wire of the roof, and the other end is fixed to the transverse steel wire under the shed. The length is slightly longer than the span of the shed (generally 0.5~0.7 meters longer than the width of the shed Yes), set one at an interval of about 2 meters. In this way, the cloth strip will swing with the wind to wipe off the attachments on the shed film, keep the shed film clean, and increase the transmittance of the shed film. After a period of time, the dust removal belt can be moved left and right to ensure that the film at both ends can also be cleaned.
In addition, vegetable farmers still have many shortcomings in terms of windshield and heat preservation and ventilation management at the door of the shed, and they need to pay attention to improvement. Once the shed is built, it is necessary to complete the facilities and use the corresponding facilities to give full play to the production performance of the shed, ensure the high yield and efficiency of vegetables, and reduce the occurrence of diseases.
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