How to buy corn varieties
First, the high yield when buying corn varieties, high product species is the first choice. Experts estimate that among the factors that increase the yield of summer corn, the variety plays a role of 20% to 30%. Second, zero-risk zero-risk refers to the corn varieties in the production process, there is no obvious defects, there is no lodging, empty stalks, baldness, late maturity, serious head and smut. While demanding the high yield of varieties, we must also pay attention to its wide adaptability and excellent comprehensive traits to ensure stable production and safety. Third, the first test because different regions, different cultivation techniques, different companies have different varieties of corn, so the first year to try to plant, and then a large number of planting the second year. Fourth, select the mainstream varieties of mainstream varieties refers to the majority of people used, planting a large area of ​​several key varieties, from the mainstream varieties to choose their own species, it is more insurance. The major corn varieties planted in China with an annual area of ​​over 2 million hectares include Zhongdan No.2, Danyu No.13, Dandan No.13, Nongda 108, and Zhengdan 958. Fifth, understand the supporting technology must make it clear whether the corn varieties are compact varieties or large ear varieties. For example, C. sinensis 20, which is rushed on leaves above the ear, is a compact variety with full grain, no baldness, resistance to rain and sunshine, and anti-smut. However, the density must reach 3,800 plants/mu, and under the condition of fertilizer and water, the high-yield advantages of density resistance and stable yield per plant can be achieved. Otherwise, the output is normal. VI. Mandatory Breeding Seedlings Crossbreeding is the first generation of a cross between two inbred lines. It is the type of corn with the highest yield in the world. In the advantage of corn hybrids, the yield is significantly higher than that of maize and the three crossbreds and maize. Double cross breeds. Seventh, the large ear varieties do not equal to the formation of high-yield corn yield, depending on the number of plants and the number of single plant weight two factors. It is not possible to determine the level of output by relying solely on ear size. The compact maize variety has a moderate plant height, uniform ear, and no empty stalks. The dense-planted 4000 plants do not fall down and achieve high yields on the combination of many spikes and large spikes. The large-spike corn varieties are easy to lodging and easy to empty stalks, and the sparse plant will reduce the production due to a small number of panicles. For example, in the United States, the world's corn power, there has been no significant increase in the yield per plant of corn in the past seven decades. The main reason for the increase in total corn production has been to enhance the tightness of the varieties. A Urine Test Strip or dipstick test is a basic diagnostic tool used to determine pathological changes in a patient`s urine in standard urinalysis. A standard Urine Test strip may comprise up to 10 different chemical pads or reagents which react when immersed in, and then removed from, a urine sample Urine Dipstick Test,Urine Dipstick,10 Parameters Urine Strips,Test Urine 10 Parameters Changchun Medicon Technology Development Co., Ltd , https://www.jlmdk.com