Fundamental Reasons Affecting the Yield of Tangshan Tiancheng Chestnut Seed

Fundamental Reasons Affecting the Yield of Tangshan Tiancheng Chestnut Seed

The adaptation range of Tiancheng chestnut to climate and soil conditions is more common. The suitable annual average temperature is 10.5-21.7℃. If the temperature is too high and lack of hibernation, it will lead to stunted growth and development. If the temperature is too low, it will easily cause the chestnut to suffer freezing damage. Tiancheng chestnut likes moist soil, but is also afraid of rain and waterlogging. If there is too much rainfall, the soil will accumulate water for a long time, which will easily affect the root system, especially the growth of mycorrhiza. Therefore, it is not suitable to develop chestnut gardens in low-lying areas prone to waterlogging.

Tiancheng chestnut is more sensitive to soil pH and is suitable for growing on slightly acidic soil with a pH value of 5-6. This is because chestnut trees are high-manganese plants. Under acidic conditions, they can activate manganese, calcium and other nutrients, which is beneficial to chestnut’s growth. Absorption and application.

The opening process of the male flower of Tiancheng chestnut can be roughly divided into four stages: filament exposing, filament straightening, filament splitting and filament withering. The whole flowering process takes about 10 to 15 days. On a male inflorescence, the male flowers at the base always bloom first, and gradually extend upward, with a difference of about 15-20 days. The flower spikes with female flowers are about 5-7 days later than the florescence of single male flowers.

The female flower has no petals. The growth and development of the stigma is the norm to observe the opening process of the female flower. The flowering process can be divided into five stages: female flower appearance, stigma appearance, stigma bifurcation, stigma unfolding, and stigma rewinding.

From the bifurcation of the stigma to its unfolding, the stigma remains novel during this period. The villi secrete mucus on the stigma for about half a month. This is the main period of pollination. At this time, high temperature and sufficient light are good for pollination and fertilization of Chinese chestnut. West chestnut production.

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