Application of growth regulator on strawberry

1. Promote rooting Among the plant growth regulators , the activity is higher, and the rooting effect is better, mainly butyric acid and naphthaleneacetic acid, 2,4-D.
The application on strawberries is generally to treat the roots of the seedlings before the colonization of the strawberries, which can promote the occurrence of roots and the growth of roots. Usually, 5~10 mg/L naphthaleneacetic acid or naphthalene acetic acid steel solution is used to soak the root system for 2-6 hours. The effect of promoting rooting is remarkable, and the amount of new roots can be doubled compared with untreated, thus increasing the strawberry planting. Survival rate.
In the breeding of strawberry seedlings, this method can also be used to obtain better results.
2. Plant regulation The spray length of 250 mg/L has obvious inhibitory effect on the growth length of the stolon, the plant height and the length of the petiole, and at the same time, it has an effect on the yield of strawberry. It is worth noting that the inhibitory effect of paclobutrazol is too large. For example, after spraying 500 mg/L solution, it not only has a strong inhibitory effect on strawberries, but also causes a reduction in yield. At the same time, until the fruit development in May of the next year, there is still a large inhibitory effect, and the photosynthetic area is seriously reduced.
Gibberellin has the effect of relieving the inhibitory effect of paclobutrazol on strawberry, and it can be effective in a week or so after spraying the 20 mg/L gibberellin solution on the leaf surface. After treatment with gibberellin, the plants that were severely inhibited by paclobutrazol were significantly increased, and the petioles were significantly longer and the growth potential was enhanced.
In order to inhibit the occurrence of strawberry stalks, 2000 mg/L of cinnabarin was sprayed in mid-June and early July, respectively, and good results were obtained. In order to make the early growth of the seedlings of the stolons thick and reduce the seedlings of the later stems, in the upper and middle of August, each spray of 2000 mg / liter of chlorophyll or 4% of chlormequat, the effect is also very good.
In order to promote the occurrence of strawberry stalks, especially for the occurrence of stolons, especially for cultivars with less stalks, gibberellin can be sprayed, and 50 mg/L of gibberellin can be sprayed at the end of April or early May. Promote the occurrence of strawberry stalks and expand the breeding coefficient of seedlings.
In protected field cultivation, gibberellin can replace low temperature and long sunshine, which can break the dormancy of strawberry, promote growth, flowering and increase the number of flowers. It is widely used in the promotion of cultivation in Japan. Spraying with 10~15 mg/L gibberellin solution can break the dormancy and enter the growth period early. Spraying gibberellin can also inhibit it from entering dormancy.
3, promote flowers, promote fruit, promote ripening In order to promote the cultivation of strawberry as much as possible, there is a whole set of technology, one of which is gibberellin to promote spit and flowering. Gibberellin can make the flower buds that have formed fast, and when the flower buds are formed, the flower stalks can grow long, and the buds can be early, and the buds can bloom early.
Spraying 10 mg/L of gibberellin at the flowering stage of strawberry has a good effect on the substantial increase of fruit yield, the improvement of fruit quality and the increase of root dry matter accumulation.
When the fruit is near maturity, spraying the fruit with 1000 mg/L of ethylene can promote fruit ripening. After the fruit is harvested, it is also possible to promote the maturation by diluting the immature fruit with a 1000 mg/L ethephon solution for a few seconds.
4, improve fruit quality In order to promote high quality and high yield of strawberry, 5406 cytokinin can be sprayed at different growth stages of strawberry. Cytokinin can stimulate the cell division of strawberry plants, into the formation of chlorophyll and protein synthesis, so that a large amount of nutrients can be transported to the fruit, so that the young fruit that could form large fruit can be fully expanded, and the original fruit shape is smaller. The young fruit is fully nutritious and develops into a large fruit. Thereby increasing production and quality.
The method of spraying cytokinin is as follows: in the vegetative growth period after strawberry colonization, spray cytokinin 600 times or twice to promote the growth of stems and leaves of the plants, improve the wintering of the strawberries, and reach the strong seedlings before winter. purpose. After entering the early spring, the plants will grow green and spray 600 times of cytokinin dilution in time to make the new leaves grow vigorously and update the old leaves early, laying the foundation for early flowering and early results. When the strawberry plants enter the early stage of the inflorescence, Perform the first flowering spray. Then, it was sprayed once every 7~10 days, the concentration was 800~1000 times, and the spraying period was sprayed 4~5 times. The spraying amount per hectare was 900 kg of cytokinin aqueous solution. It should generally be sprayed after 2 pm.

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