How to determine the corn harvest time
Milk ripening period: From the initial stage of milking to the early waxing stage. Generally mid-maturing varieties need about 20 days, that is, from 16 days after pollination to 35-36 days; medium and late-maturing varieties need about 22 days, starting from 18-19 days after pollination to around 40 days; late-maturing varieties need about 24 days , from 24 days after pollination to around 45 days. During this period, various nutrients accumulated rapidly. The total amount of dry matter in grains accounted for 70% to 80% of the maximum dry matter weight. The volume was close to the maximum, and the grain moisture content was about 70% to 80%. Because the grain is milky white paste for a long time, it is called milk ripening period. If you scratch with your nails, there is a milky white slurry overflow. Wax ripening period: From the early waxing to the ripening. Generally, mid-maturing varieties need about 15 days, that is, from 36 to 37 days after pollination to 51 to 52 days; middle and late-maturing varieties need 16 to 17 days, that is, from 40 days after pollination to 56 to 57 days; late-maturing varieties It takes 18 to 19 days from 45 days after pollination to 63 to 64 days. During this period, the dry matter accumulation was small, the total dry matter volume and volume had reached or approached the maximum, and the grain moisture content decreased to 50% to 60%. The content of kernels changes from a paste to a wax, so it is called the wax ripening period. When you use your fingernail, you can only leave a scratch. Completion period: dry matter accumulation after wax ripening has stopped, mainly due to the dehydration process, and the moisture content of grains has dropped to 30% to 40%. The base of the embryo reaches a physiological maturity. The crown is removed and the black layer appears. Harvesting time: Because of the difference between corn and other crops, the seeds are placed on the ear, and it is not easy to fall off after ripening. The ripening effect can be achieved on the plants. Therefore, the ripening period is the best harvest period for corn; if silage is carried out, it can be harvested as early as possible at the end of wax ripening or ripening early. Correctly grasping the harvest period of corn is an important measure to ensure high quality and high yield of corn. If not harvested after the ripening period, the supporting power of the corn stalks is reduced, the plants are easy to fall, and the ear of the lodging is exposed to the ground to cause mildew, and it is also vulnerable to bird pests, causing undue loss of yield and quality. Whether corn enters full maturity can be seen from its appearance characteristics. The middle and lower leaves of the plant turn yellow, the base leaves dry, the leaves of the ear become yellowish-white, and loose, the seeds harden, and present the inherent color of the species. Product categories of Hot Riveting Welding Machine, we are specialized manufacturers from China, Hot Riveting Machine For Door Panel, Door Panel Welding Machine suppliers/factory, wholesale high-quality machine of ultrasonic welding R & D and manufacturing, we have the perfect after-sales service and technical support. Look forward to your cooperation! Hot Riveting Welding Machine,Hot Riveting Machine For Door Panel,Plastic Hot Riveting Welding Machine,Auto Grille Hot Riveting Welder Wuxi DIZO Ultrasonic Technology Company , https://www.dizosonic.com