The weather is dry, can the corn field be sown with compound fertilizer? Bolting period of corn.

First, the weather is dry, so you can sprinkle compound fertilizer into the corn field.

1. It is best to sprinkle the compound fertilizer into the ground at the bolting stage before watering it.

2. The compound energy can be sown in the corn field after rain or before rain, and the fertilizer can be used in time with high utilization rate.

Second, corn moisture

Corn plants are tall and have large leaf area, so it needs more water. The optimum precipitation during maize growth is 4 10-640 mm, and drought affects maize yield and quality. It is generally considered that the area below 150mm in summer is not suitable for planting corn, but too much precipitation will affect the light, increase the harm of diseases, lodging and weeds, and also affect the improvement of corn yield and quality. Although corn needs a lot of water, its relative water demand is not too high, and its transpiration coefficient is 240-370, which is lower than that of barley (280-400), oat (340-500), purple flower (83 1) and clover (797), so the water consumption is more economical. The root system of maize is developed, which can make full use of the moisture in the soil. When the temperature is high and the air is dry, the leaves curl upward, reducing the transpiration area and achieving a proper balance between water absorption and transpiration.

Third, corn nutrients.

Nitrogen, phosphorus, potassium, sulfur, calcium and magnesium are in great demand, while iron, manganese, zinc, copper, barium and chlorine are in small demand. From 10 day before heading to 25-30 days after heading, corn has the fastest material accumulation and the most fertilizer absorption. At this stage, it absorbs 70-75% of the total fertilizer absorption, 60-70% of phosphorus and 65% of potassium. The production of 100 kg of corn kernels requires 75-2.22 kg of nickel, 40.59-0.85 kg of phosphoric acid and 0.5-/0.84 kg of K2O/kloc-0. The ratio of the three is 2.6: 1: 2. ?