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This year, there are many farmers who grow tomatoes for sauce (processed tomatoes). But a lot of people only saw last year's profits. But few people see the risks of planting tomatoes this year.
I have summarized some of the points that farmers are more likely to make mistakes. Let me tell you about it.
1. Preparation before sowing processed tomatoes
Herbicide applied before planting and processing tomatoes. This herbicide dosage. First, it depends on the quality of the soil. Sandy soil, the amount is lighter, clay soil is heavier. The second is to look at the humidity. The ground is wetter and lighter. The land is relatively dry, the water content is relatively low, and the amount of use is a little heavier. The third is to look at organic matter. If the organic matter content is high, it can be appropriately weighted. If there is less organic matter, then play lighter. This is the "three looks" before herbicide application, which is applicable to most field crops in almost all fields. The normal recommendation for processed tomatoes is 33%, and the dosage per mu of pendimethalin is 100 grams to 150 grams.
Second, the soil preparation before processing tomato mulching
Processed tomato plans for artificial planting. Use two-five-squares or four-six-squares. Flat rake one side, so that the surface layer of virtual soil three to five centimeters below is more solid.
Plan to plant seedlings mechanically, and use a combined soil preparation machine to make a surface layer of virtual soil of seven to eight centimeters, and the bottom should be solid. Prevent mechanical seedlings from not being planted deep enough. (The water for mechanical seedling planting should be large, and the pipe should be repaired and watered at that time, and the time is urgent.) Plan the coordination of the repair workers, watering workers, water conditions, and seedling planting progress).
3. Disease problems
This spring is likely to be low temperature and high humidity, which is conducive to the occurrence of stem rot, and we must do a good job of root repair. The method is as follows: dig a soil pit 70 centimeters wide and 3 meters long, with a height of about 20 centimeters. Lay the plastic sheet, put water and add Prik, the potion ratio is 4000-5000 times. Then when unloading the seedlings, put them in next to each other and fish them out from there, although the method is more soily. However, it can reduce the occurrence of stem base rot by at least 80-95%.
Fourth, the configuration of drip irrigation belt
A problem that many of us grow tomatoes are prone to make. It's a matter of the configuration of the drip belt. It depends on the source of water. For well water, try to choose 22 to 26 drippers. The river is irrigated, because the bow is too small, it is easy to plug the capillary pipe with 26 to 32 drippers. Another thing is to look at the soil quality. The sand should be small but not large. 2.2 to 26。Clay soil. It should be big, not small. 2.6 to 32。The upper and lower two items should be considered comprehensively.
a) River irrigation, sandy soil, with 26-2.8. Dripper, if the dripper is large, it is easy to produce open water when watering, and it is easy to rot fruit in the later stage.
b) Well irrigation, granular soil, with 32. Dripper, if the dripper is small, the water spreads slowly to both sides, and the survival rate of the water is low when planting seedlings, especially for machine-planted seedlings.
This basic work must be planned, otherwise it will not be able to be adjusted later.
Fifth, artificial seedlings should be planted
When the soil moisture is suitable, go to the holes. The overly wet membrane adheres to the wall of that hole, which is not conducive to the later hair roots. Dry the topsoil in the reflux holes. The pores are small and shallow, and the colonization is too shallow, which is not conducive to the production of adventitious roots, and it is difficult to produce high yields (the bristles below the cotyledons can form adventitious roots, and the more adventitious roots, the stronger the absorption capacity).
Sixth, calcium supplementation
Sauce with tomato first branches has 50 to 60% of the time of flowering. Foliar calcium fertilization, once every seven to nine days. This is to prevent umbilical rot in the later stages. It can also be used in one water, three water, five water, seven water, each with two kilograms, containing high calcium medium element fertilizer.
7. Pay attention to insect prevention
The main pest of tomatoes for sauce is cotton bollworm. Pay attention to the control of early thrips (70-80% of the seedlings are the control time) in the direct seeding tomato, so as not to cause long or headless seedlings and affect the yield. It is necessary to pay close attention to the insect forecasts issued by the local agricultural departments and prevent and control them in a timely manner.
Note! Note! Medications used. Refer to the Drugs other than the Prohibited Drugs provided by the Tomato Paste Factory. This year, the planting area is relatively large. The sauce factory will be more strict on this requirement because it has to be exported. If the sauce factory is caught, the sauce factory will refuse to accept it. This one is troublesome. Farmers who don't understand can refer to the ** I posted earlier or leave a message in the comment area.
Personal opinion, for reference only. Kenong Plant Protection Chen Zhong.