When will the walnuts be harvested?

When will the walnuts be harvested? Please introduce that the yield of walnut mainly depends on the volume of walnut and the weight of single fruit. When the walnut reaches the near ripening stage, the size of the fruit is basically fixed. There was no significant difference in vertical diameter, horizontal diameter and edge diameter of walnut in different harvest periods. However, the internal dry matter accumulation of early harvested walnuts is still increasing. The investigation data showed that at this time, the average single grain weight of walnut increased by 0.07 grams per day, and the later the walnut was harvested in a certain period of time, the greater the weight gain. Every 10 days before fruit drop, the yield can be increased by 10%. The single fruit weight before harvest increased rapidly before August 25, and the yield increased mainly before August 25. It can be seen that early harvest of walnuts is bound to reduce the yield. The closer the walnut is to maturity, the fuller the fruit is, the weight of nucleolus is increasing, and the kernel yield is gradually increasing. The increase of single grain weight of walnut is mainly due to the weight gain of walnut kernel. The weight of walnut kernel increased significantly when the harvest was postponed properly, and the average daily weight gain was 18%. The results showed that the kernel weight of walnut increased sharply with the postponement of harvest time, and the increase was higher than that of kernel yield and plumpness. Before August 25, the kernel weight of walnut increased by more than 13% every week after late harvest. According to the experiment of Beijing Forestry Research Institute, when walnuts were harvested half a month earlier, the kernel rate and oil yield decreased by 5-10%. The harvest time was postponed from August 28 to September 19, and the oil content of walnut kernels could be increased by 80%. Harvested before August 25 in Shangluo, Shaanxi Province, the nucleolus is small and often has empty grains or half kernels, which can not meet the commodity requirements. Walnut will be harvested sooner or later, which will affect the quality of walnut. Early picking, walnut kernel brown or deep color, light taste, extremely astringent. Harvested from August 25 to September 1, the walnut kernel is yellowish brown or light brown, the taste becomes fragrant and slightly astringent; after September 1, the walnut kernel is white and yellow, the taste is oil-fragrant and crisp. Walnut harvested late, high maturity, natural cracking of green skin, easy to remove green skin, peeled fruit surface clean and good-looking, easy to sell. For most people in walnut producing areas, for fear of losing walnuts, or for fear that the late harvest of walnuts will affect the planting of wheat, or for walnuts to be put on the market early and sell at high prices, walnuts are generally harvested early and have the habit of "the End of Heat" beating walnuts, which is 10-15 days earlier than the suitable harvest time for walnuts. At present, there are still many places that hit walnuts at the time of "the End of Heat". Walnut listed early and sold at a high price, although it sold some more money, but the total output of walnut production decreased a lot, product quality decreased, affecting the price decline, greatly affecting the total income, in fact, the loss outweighs the gain. The maturity period of walnut trees planted sporadically is not consistent, while that of walnut trees cultivated in patches is more consistent. In Chuandao, river valleys, hills, low and middle mountain areas, it is better to harvest in early September, and in high mountain areas in early and middle September. Walnut ripens before and after the "White Dew" festival, so it is appropriate to postpone harvest for a few days, and it is best to harvest in stages and in batches. Click to get more hickory planting techniques click to get more fruit planting techniques