Autumn delay tomato high yield cultivation techniques

Rational irrigation and fertilization

In order to reduce the temperature in the hot season and prevent diseases, it is advisable to infuse horse water in the morning and evening, then moisten the surface and then drain the water to prevent the humidity from growing too much and the roots to induce diseases and seedlings to grow. Field soil is always moist. Top dressing combined with irrigation. After planting for 10 days, combined with cultivating and weeding and applying 3% compound fertilizer water; when the first ear fruit grows to the size of walnut, 10 kg of urea is applied per mu; when the third fruit is set, 10 kg of urea is topdressed.

Strengthen pruning and topping

Autumn delay tomatoes grow fast, pruning in time. The single-stem stalking method is adopted for the pruning, that is, only the main culm is left, and the remaining lateral branches are all destroyed, and the foot buds are wiped off, and a good stand is used to prevent lodging. In the late September, pick up the hearts in time, leaving three panicles, keeping 3 to 4 panicles per panicle and removing other fruits to improve the quality of the tomatoes.

Timely and appropriate use of hormones

In order to prevent high temperature from causing flowering and fruit drop, during the autumn delay of tomato flowering, with a concentration of 15 to 20 mg/kg of 2,4-D inflorescence, one flower can only be picked once, and 2000 mg can also be used when the fruit is whitish. / Kelly concentration ethephon smear ripening. In the late period, fresh fruit cannot grow naturally because of its low temperature. Fruits can be soaked with ethrel at a concentration of 2000 mg/kg, and red at room temperature. Tomatoes can be marketed from late December to early January of the following year.

Pest control

The diseases and pests that occur in late autumn tomatoes are only downy mildew, brown spot, aphids, and tobacco budworms.

Disease prevention can be treated with 800 times Daisenzinc or 600 times antivirus scorpion alternately, once every 7 days, even 3 times. Aphids can be treated with 40 to 50 times tobacco water or avermectin 3000 times. H. pylori can be controlled by 20% chrysanthemum 2000 times.

Timely anti-freezing

Coverage time is determined by weather conditions. In order to ensure that tomatoes have more than 50% of fresh fruit and morning market, when the temperature drops below 20°C, the shed is started. Immediately after the shed, observe the temperature inside the shed. When the temperature reaches 26°C, the bleb should be promptly released, and gradually reduce the bleed time as the temperature decreases. When the temperature drops to 5°C, the shed is no longer let off.

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