After mid-September, greenhouse vegetables entered a period of vigorous growth. During this period, the vegetative growth and reproductive growth of vegetables were carried out at the same time. Many vegetables started to undergo flower bud differentiation. Management during this period is very important.

Q: What if the tomato grows too strong?

A: In general, vegetative growth is the material basis and energy base for reproductive growth, but nutrient growth is too prosperous and detrimental to reproductive growth. Because in this case, most of the organic matter is consumed by vegetative growth, and there is not enough organic nutrients for reproductive growth.

For this period of tomato growth is too strong, farmers can timely appropriate amount of pruning leaves, scaffolding, so that ventilation and good ventilation, and the use of growth regulators such as anti-droplet spray, promote fruit set, inhibit excessive vegetative growth. Ventilate in a timely manner. After the plants are rejuvenated, under a certain temperature, they must ventilate boldly to reduce the humidity in the greenhouse. The beginning of fruiting and fruiting, it is necessary to put the end of the wind under the skirt, the minimum temperature outside the night is not less than 15 °C, day and night to be ventilated.

Control of water and fertilizer, generally do not apply fertilizer before flowering and fruit setting, especially the use of mulching, after sitting on the fruit, it began to appropriate fertilizer as appropriate. Control the amount of nitrogen fertilizer, more potassium fertilizer and phosphate fertilizer.

Q: How should the green onions be managed in the field?

Answer: In the fall, the management of green onions in the field is to promote roots, strong trees and soil softening, strengthen water and fertilizer management, and create suitable environmental conditions for the formation of light blue, thus improving the yield and quality of green onions.

Onion has a relatively high requirement for water and fertilizer conditions. Between the beginning of autumn and the time of white dew, irrigation should master the principle of light pouring, watering sooner or later. After the white dew, green onions enter the peak of growth, and irrigation should be based on the principles of pouring and re-watering. Pour water once every 4-6 days. After the frost falls, the temperature drops, the onion basically grows, the water requirement decreases, and the soil is kept moist. Stop watering 5-7 days before harvest, which is conducive to harvesting and transportation.

Onion basis in the application of basal fertilizer but also phase fertilizer. After the beginning of autumn, when plant growth speeds up, topdressing "foliar attacking fertilizer", applying calcium fertilizer and phosphate fertilizer 20-25 pounds per acre, promote leaf growth. After the White Dew Festival, it enters a period of vigorous growth, which is the key period for the formation of welsh onion yield. It should be combined with watering to topdress two times, each applying 15 kg of urea per acre and 15 kg of potash, topdressing between rows, and watering after shallow cultivating.

Q: Is it suitable to grow greenhouse celery in the fall? What should be noted when planting?

Answer: Celery is a fast-growing green leafy vegetable, and its adaptability is very strong. In general, greenhouse celery is nursed in the summer and planted in the autumn. Planting now requires a good grasp of nursery.

Most of greenhouse celery is sown with dry seeds, and germination can also be used. In the seedbed, the bottom water should be poured. When the drowning water is not completely infiltrated, the seedbed should be leveled with fine soil and the seeds spread evenly on the bed of the seedbed. Shed celery should be covered with shade-proof and rain-proof equipment after sowing. After the emergence of celery, the shade time can be gradually reduced and the time of light can be increased. And the seedbed should be regularly sprinkled, when the seedlings of celery grow to have 4-6 leaves, to conduct appropriate water control, timely control of insect pests and virus intrusion, prevention of celery in the seedlings when the damping-off disease.

The seedbed should be irrigated before the celery is lifted. This will help the celery seedlings to be uprooted. The celery seedlings will be sorted and planted according to the size of the seedlings, and the individual plants will be planted to a suitable depth. Plant water immediately after planting.

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