Reasons for low fruit setting rate of Chinese chestnut and measures to improve fruit setting rate

Chestnut is a traditional fruit of our country, it is rich in nutrition, there are Oriental pearls, known in all parts of our country are distributed, artificial planting area is very wide. But in artificial planting, often appear fruit set rate low phenomenon, seriously affect your yield and economic benefits of growers, then cause chestnut fruit set rate low reason is? If you deal with it, let's take a look at the pro-agricultural network together.

1. Reasons for low fruit setting rate

The main causes of fruit setting rate of chestnut were nutrient deficiency, poor pollination, weather, variety and lack of trace elements. During the flowering period of chestnut, the branches and leaves of the plant grow together with it, so it will lead to the phenomenon of nutrient preemption, resulting in insufficient nutrients, resulting in low fruit setting rate. Castanea mollissima is a mono-plant cross-pollinated tree species, its male and female flowers have different opening time, and often male flowers are more and female flowers are less, so the fruit setting rate is low. In addition, if it is cloudy and rainy during pollination, it will lead to poor pollination or pollination failure, resulting in a decrease in fruit setting rate. Therefore, to achieve high yield of chestnut, solve the fruit setting rate is the key, and these reasons are related to the fruit setting rate, so the management of these aspects should be strengthened during planting, so as to achieve high yield.

2. Measures to improve fruit setting rate

Strengthen fertilizer and water management: nutrient deficiency causes fruit setting rate, we must strengthen fertilizer and water management, first of all, apply enough base fertilizer when doing it, dig a circular ditch around the planting area after picking fruit every year, pile up 100 kilograms of fertilizer inside, so that the tree body can recover as soon as possible and promote flower bud differentiation in time. Next is topdressing, spring is the growth and flowering period of branches and leaves, resulting in low fruit setting rate is also the main time at this time, then we should choose quick-acting nitrogen fertilizer as the main topdressing, each plant supply about 1 kg of urea, can make its branches and leaves luxuriant, the number of flowers. At the later stage, in order to avoid the phenomenon of empty bud, some boron fertilizer should be applied to improve the yield, about 0.1-0.25kg per plant, and it can also be combined with foliar fertilizer.

Reduction of male flowers: the number of male flowers far exceeds that of female flowers, so the male flowers can be reduced in the flowering period to avoid the consumption of plant nutrients and correspondingly increase the number of female flowers. Generally, before flowering, excessive male flowers or more male inflorescences on some fruit branches will be cut off.

Artificial pollination: Chestnut is a tree species with high cross-pollination rate. According to experiments, the probability of mono-pollination is only 20%, while the probability of cross-pollination can reach 90%. Therefore, when planting, plant some pollinated varieties around the production varieties to improve the fruit setting rate. In addition to this method, the simplest method of pollination is to collect pollen, carry out artificial pollination, collect pollen from male flowers of other plants, and smear it on female flowers of other plants. The probability of pollination is 100%.

The above is the reason for the low fruit setting rate of chestnut brought by the pro-agricultural network and the method to improve the fruit setting rate. I hope it can help you. If you want to know more, please pay attention to the pro-agricultural network.