Problems that should be paid attention to in the use of pear fruit dilatins
Pear fruit expander is a plant growth regulator developed and utilized in recent years, and its effect is to promote fruit cell hypertrophy, especially in early and middle ripening pears.
However, the improper use of pear fruit dilatins, not only can not achieve the desired effect, but also cause side effects. Therefore, pear trees that use dilatins must keep up with water and fertilizer, especially all-element chemical fertilizers to ensure sufficient nutrients to meet the needs of fruit growth and development, so as to achieve the ideal effect.
In addition, it should be harvested in time. Although dilatins can promote ripening, it can only mature 7-10 days ahead of schedule. Even if the fruit weight reaches the inherent weight, it does not reach the due ripening period, which will lead to the weakening of flavor and the decline of quality. However, it is more harmful to harvest too late, and the storage resistance will be reduced due to overripening, so the suitable harvest time for fruits using dilatins should be about 7-10 days in advance.
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Three-season pear
Source of variety: originally from France, preserved by Dalian Agricultural Science Research Institute. Characteristics: the crown is inverted conical, the young trees are upright, and the adult trees are semi-open. The flower buds germinated in late March, flowered from late April to early May in Dalian, and the fruit was harvested in early August. Generally, it began to bear fruit 3-4 years after planting, and entered the full fruit stage in 8-10 years. The plant yield was 50-100kg and the yield per mu was 3000kg. The ability to resist black leaf disease is medium, the ability to resist insects is strong, the ability to resist cold is medium, and it is more resistant to wind. Big fruit
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Guobao can promote the coloring and ripening of peach fruit.
Guobaosu is a new type of plant growth regulator, which is produced by Shanghai solvent Factory. In 1991 and 1992, Li Guangchen, Department of Horticulture of Beijing Agricultural University, conducted experiments on peach varieties such as "Zaofeng" and "Okubo". According to the reports of Li Guangchen and others on peach varieties such as "Zaofeng" and "Dajiubao" peach fruits were sprayed 4-3 weeks before the normal harvest period, the fruit could be colored 5-10 days in advance, and the fruit coloring index was significantly increased, the fruit was very beautiful, and the fruit ripening period was 3-10 days earlier. Early harvest does not reduce fruit firmness and soluble solids content.
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