Timely harvesting is an increase in yield without any additional input, but different crops have their own suitable harvesting periods. Only harvesting within the appropriate period can increase yield and quality. If harvesting is too early or too late, not only low yield but also high quality. difference. Maize corn is harvested at the ripening stage. At this point, the leaves of the ear of the ear become white and dry, the grain filling stops, the “dairy line†disappears, the base hardens, and the water content is about 30%. However, at present, there is generally a phenomenon of early harvest, especially for some varieties with pseudo-maturity, generally when the loquat leaves turn white or when the top of the grain becomes hard to harvest, the actual harvest from the appropriate period of 7 ~ In 10 days, the grain weight at this time was only about 90% of the harvest. The harvest of sorghum sorghum is suitable at the end of waxing. At this time, the grain from the top of the ear to the middle and lower part has become hard and has an inherent color; the grain at the base of the ear has been solidified in a waxy shape, and although it has not hardened, no juice has flowed out when the skin is cut by hand. . Millet millet harvesting period is at maturity. At this time, the yellow leaves of the plants and the yellow stems of the shoots were yellow, and all the seeds showed inherent color. The seeds were powdery or keratinous and relatively hard. The rice paddy is harvested at the ripening stage in the later stage of yellow ripening. In order to sow wheat in time, the wheat paddy rice can be harvested in advance in the mid-yellow ripening period. Soybeans are harvested at the end of the yellow maturation period. At this point, the plants and pods all became yellow-brown, most of the leaves fell off, and the grains in the pods were detached from the moltings and the hand was rattled. The roots of sweet potato sweet potatoes are vegetative and have no obvious maturation characteristics. As long as conditions are right, they can continue to grow. In production, generally, the harvest begins when the ground temperature is 18°C; the preserved sweet potatoes start from mid-October and are collected before the frost falls. Peanuts and peanuts should be harvested at an appropriate period and should generally be determined based on the plant's appearance and fruit maturity. From the plant's appearance, the upper leaves turn yellow, the middle and lower leaves turn from green to yellow and gradually fall off, and the stems turn yellow-green; from the development of the mangos, in the normal years, most of the pods have a mature symbol. In some places, the harvesting period is determined solely by the number of days of fertility, and no specific observations and analyses are performed, often resulting in losses from early morning to evening. Gardenia jasminoides has a long flowering time, and flowering time on the same ear is also early or late, and the maturation period is very inconsistent. Generally, the grains at the top of the panicles mature first, and the grains in the middle and lower parts mature. Determine the best harvest time, mainly to see if the grain in the middle part of the ear becomes hard, whether it has the color of this species, and if the above two conditions are met, it can be harvested. The flowering period of buckwheat is as long as 30 to 35 days and matures 23 to 30 days after flowering. Since the plants from the bottom up, from the main stem to the branch flowering, sooner or later the solidification time, maturity is also inconsistent, so can not wait for the harvest when the whole plant matures. In the lower part, more than 70% is generally mature, and there is still a small amount of flowers in the upper part when it is open. Choose to do in the morning when the dew is not dry to reduce the drop. Mungbeans When two-thirds of the pods on the plants turn dark brown, they should be harvested in time. However, due to inconsistent maturation of pods on the main branches and branches, they can be harvested in batches to reduce losses and improve yield and quality. , Mature batch harvested. The long flowering period of red adzuki bean is very inconsistent with the maturity of pods, and it is often that the bottom pods are mature and the upper pods are grouted. It is best to adopt the method of harvesting in stages and mature one batch to receive one batch. If the planting area is large, it can also be harvested when two-thirds of the entire plant capsule turns white-yellow. The characteristics of timely harvested sesame plants are: most of the leaves are brown, of which more than two thirds have already fallen off; the pods are tan and brown, and the lower part has cracked. The upper part of the pod is yellowish or yellow-green and still tightly closed. Shake the lower part by hand. The sound, the grain shows its inherent color.
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