Improve corn yield to increase planting density

First, the composition of maize yield per mu is the number of mu plants × the average per plant yield or the number of mu ears × the average panicle weight. Under the premise of stable yield per plant, the more acres, the higher the yield. Maize is a single-stalk crop, unlike the wheat and rice, which can be divided into crops. Generally, each corn has only one ear. Therefore, to increase the yield, on the one hand, it is to increase and stabilize the single ear weight, and on the other hand, to increase the number of plants. Increasing density is the most direct and effective way to increase production.
Second, corn is a high-efficiency C4 crop, which has great potential for yield increase. Its photosynthetic efficiency is higher than C3 crops such as wheat and rice. From the perspective of dry matter production, the yield is mainly determined by the leaf area coefficient, photosynthetic efficiency and photosynthetic time. The more plants per acre, the higher the leaf area coefficient, and the higher the dry matter production and yield.
Third, in the factors affecting the yield of corn, the density is most easily influenced, controlled and controlled by artificial cultivation measures. As long as they are properly operated in the sowing and seedling stages, the required density can be achieved.
Fourthly, raising the density will increase the competition among individuals in corn plants for light, nutrients, and moisture. Under conditions of excessive density, light, nutrients, or insufficient water, it will lead to baldness, smaller ears, or even empty stalks. The biggest risk is that Secrets are prone to lodging. However, these problems can be solved by measures such as dense varieties, increasing fertilization, and timely watering. Therefore, it should be adapted to local conditions and be closely planted.
Fifthly, during the interactive process of maize breeding, cultivation measures and yield improvement, it is basically a process of “improving the density and lodging resistance of the varieties, increasing the density, increasing the amount of fertilizers, and increasing the yield”. The main line for the development of corn research and production is the process of increasing density, increasing the amount of fertilization, and promoting the improvement of yield. The continuous increase in planting density and the increase in fertilization levels are the main ways to increase maize production.

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