【Objective】Boron and sucrose are essential to plants. Boron participates in the transport of the carbohydrates in plant and thus improves the supply of organic matters. Sucrose provides materials and energy for plant growth and development and serves as a signal molecule that regulates carbohydrate metabolism. Boron and sucrose have an impact on the accumulation of the non-structural carbohydrates. Chinese chestnut(Castanea mollissima Bl.) is a major traditional commercial nut-bearing tree in China. The dev...