Celery is a low-temperature-resistant crop, and it is one of the major crop varieties cultivated in winter and spring. The vegetable farmer of Guihe Village, Tianma Township, Shouguang City, devoted a lot of time to the production and management of the “Kwai River†brand celery.
The following are some of the ways that vegetable growers can use plant growth agents and other control measures to increase the production and quality of celery, based on the requirements of the growth and development laws of the plants at different periods:
First, spraying gibberellin
Gibberellin is a highly efficient plant growth stimulant that promotes cell division after spraying, increases cell volume, and increases the overall cell growth rate of the plant.
After comparison, after use, the plant height can be increased by 7 to 10 cm, the stem diameter increased by 0.2 to 0.5 cm, the number of leaves is unchanged, and the leaf color turns dark green, which does not affect the quality, and can be harvested 5 to 6 days earlier and can be improved. Yield.
When applying in production, it is necessary to grasp the spraying time and proportioning concentration. Generally about one month after planting, when the plant body grows to about 20 cm in length or about 15 to 30 days before harvesting, this period is when the celery plant body is in a vigorous growth period, which is the best choice for spraying gibberellin. period.
Spraying too early can lead to slender and thin growth of celery, and can also cause tetany too late. The application concentration is generally 10 mg/l, and addition of sucrose at a concentration of 1% in a gibberellin solution or addition of potassium dihydrogen phosphate at 0.1% is better. Generally choose sunny, spray before 9 o'clock, spray once a week, spray a total of 2 or 3 times, not suitable for rainy days. After the spraying, the growth rate is accelerated, and water and fertilizer should be added in time to facilitate normal growth. Water and fertilizer can not keep up with the appearance of slender stems, delicate appearance, hollow and other physiological phenomena, not only affect the yield, but will reduce the quality.
Second, the application of zinc fertilizer
The main role of zinc in the plant body is to participate in the synthesis of auxin and the activities of some enzyme systems, which directly affect the growth rate of celery.
Celery is a sensitive crop that requires zinc. This has been recognized by most vegetable farmers. In the absence of zinc, the growth of the plant's apices was inhibited, and the stems and leaves were slightly deformed and the leaves were clustered. Zinc fertilizer can be applied in the form of basal fertilizer to 4 kg of zinc sulfate per acre. Foliar spray can also be carried out. Generally sprayed with zinc sulfate in a concentration of 0.01 to 0.05%, it also has a good effect.
Under the premise of satisfying the zinc fertilizer, it can also regulate the content of manganese in the root, the content of iron in the leaf part, the sugar content in the stalk part are all increased, the cellulose content is obviously decreased, and the quality of the celery product is improved.
In addition, celery is more sensitive to boron and calcium. Boron in soil or soil temperature is too low, so it is easy to inhibit the absorption of boron and calcium, which will cause celery to produce physiological diseases such as petiole transverse crack and dry heart disease. Reduce the product's output and quality. Therefore, in the growth of celery should pay attention to the application of boron and calcium fertilizer.
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