How to prevent empty chestnuts
ZHOUSHAN SINOMEGA BIOTECH ENGINEERING CO.,LTD , https://www.sinomegabiotech.com
Reasonable selection of pollination tree chestnut cross-fertilization pollination rate is high, self-pollination is often not easy to bear fruit. Therefore, when planting, it is necessary to use fine varieties with a high seed setting rate, and pay attention to the selection of pollination trees. There are many types of floor chestnuts, and the pollination mix is ​​also different. For example, if the main cultivar is Minnong 77-01, the pollination combinations are Minong 77-02 and Minong 77-04. The number of pollination trees should be about 1/3 of the total number of trees. Practice has proved that rational selection of pollination combinations can greatly increase the seed setting rate and increase the output of chestnut.
The appropriate removal of male chestnut trees is a dichogamy of male and female plants. Male inflorescences are opened first and female inflorescences are opened later. When the male inflorescence grows to 2 to 3 cm, removing 90% of the male flowers not only does not affect the normal pollination of the tree, but also has a handsome leaf color, a high seed setting rate, and an increase in the weight of the individual fruit. It can also mature in advance for 7 to 10 days. Early harvest, morning market. The proper removal of male flowers from the chestnut is indeed a measure to increase production and increase income, especially for young trees.
The addition of boron fertilizer to chestnuts is very sensitive to the reflection of boron, especially the application of boron fertilizer in soils deficient in boron can effectively reduce the emptying rate and increase the yield per plant. Specific application methods: First, the application of boron in the bud, in the early spring combined application of bud fertilizer, the application of borax into the soil, usually 100 to 150 grams of borax per plant, boron-deficient soil can also be more appropriate. The second is the spraying of boron during flowering. Each 1/15 hectare uses 100 grams of borax, 50 kg of water, and evenly sprays on the female flowers. The boron concentration can be increased appropriately for high open rates. Chestnut boron spray boron after the open rate can be reduced by 20% to 30%, yield increased by 3 to 4 times.