First, premature harvesting of corn can lead to a lack of growth period and reduce production. The primary reason for the lack of yield reduction during the growing period is to shorten the filling time and reduce the weight of corn. The late sowing or early harvest had little effect on the growth time before the flowering stage of the corn, which mainly reduced the time of grain filling, and most of the corn grain yield was formed during the grain filling period. Although the time taken before flowering is long, the dry matter produced is usually less than half of the final total dry weight. The photosynthetic products of leaves before flowering are only the foundation for the later grain production, and they can rarely be directly used for grain production. Although the time from flowering to maturity is short, it is very important for the formation of yield. At this stage, most of the photosynthetic products in the leaves were transported to the grains to form yields. During the grain filling period, not only the amount of dry matter production was large, but also the grain size was mainly used for the grain production, which was directly related to the level of the economic coefficient. 80% to 90% of the corn grain yield comes from the photosynthetic product during the filling period, and only 10% to 20% is stored in stems, leaves and sheaths and other organs before flowering, and then transported to grains in the filling period. Therefore, the longer the grain filling period, the greater the grouting intensity and the higher the corn yield.
The second is in the case of full maturity, with the largest grain weight and the highest yield. Earlier harvest, poor maturity, low grain weight, and reduced yield. In some places, there are habits of early harvest, often harvested when the leaves of the ear have just turned white. At this time, the weight of a thousand grains is only about 90% of the ripening period, and the yield is generally reduced by about 10%. It should be corrected.
Third, the compact maize varieties used in production have a phenomenon of “false ripeningâ€, that is, corn leaves are turned white earlier and the grains have not stopped filling. These varieties are often harvested in advance. Usually 40 to 45 days after pollination, that is, the milk line has been harvested when it is moved down 1/2 to 3/4, which is 8 to 10 days earlier than complete physiological maturity. The yield is generally reduced by about 8%, and the reduction rate of mid-late maturing varieties is More than 10%.
Lactobacillus Rhamnosus,Lactobacillus Rhamnosus Powder,Lactobacillus Rhamnosus Probiotic,Lactobacillus Rhamnosus Supplement
Jiangsu Biodep Biotechnology Co. ,Ltd. , https://www.mbioda.com