Sowing time of spring corn in Shandong Province

It's time for spring ploughing and it's time for farmers to plant crops. Shandong as a major economic province, when is the planting time of spring corn in Shandong, and how to determine the planting time? Today we will explain in detail the planting time of spring corn in Shandong. Let's take a look.

Because of the early sowing time and long growth period of spring corn, Shandong has a high yield. Spring corn is generally planted in early April and harvested at the end of August in Shandong area.

Planting techniques of Spring Maize in Shandong Province

The main results are as follows: 1. Select suitable ploughing, stubble removal and fine middle and upper fertility plots for soil preparation and ridging, and there is no limit to flat and low land. Large ridges are formed on the basis of the original ridges with a distance of 0.5 meters, that is, two ridges are integrated into a large ridge with a spacing of 1 meter, and the width of the ridge is about 0.7 meters.

2. To select suitable varieties to cultivate fresh green corn, it is necessary to achieve "three grabs", that is, to rush for seed, market and next crop in order to obtain considerable economic benefits. therefore, it is very important to select early-maturing and high-quality varieties. The ideal varieties of green corn are Shennong Tianyu 2, Shenxian 1, Jinxian 2, June fresh, black pearl, black agate, colorful corn and so on.

3. Formula fertilization is applied every 667 square meters (mu) with agricultural fertilizer 3000ml 5000 kg as base fertilizer, and chemical fertilizer as seed fertilizer is applied once and deeply into the soil layer 10mu 12 cm from the surface. Generally every 667 square meters of urea 30 murine 40 kg, diammonium phosphate 10 kg, potassium chloride 10 Mel 12 kg, can also be applied formula special compound fertilizer.

4. Sowing at the right time when the soil temperature of 5 cm in spring is stable to 10 ℃, it is usually at the end of March or the beginning of April in Xingcheng. The sowing density varies according to the variety, generally protecting 3500-4000 seedlings per 667m2. Double rows were planted on the ridge, with a small row spacing of 30cm and a plant spacing of 30cm. Three seeds were sown in each hole, and one healthy seedling was left in the interseedling. After sowing, step on the grid and cover the soil with a thickness of 3 cm.

5. After spraying, film mulching and sowing, the fine ridge surface is leveled, and the herbicide is sprayed on the soil surface with a sprayer, generally using Acetochlor + atrazine or Rasol + atrazine, spraying with 200ml of water 50m 75 kg per 667 square meters (see the instructions for the use of herbicides for details). The method of spraying herbicides while spraying is adopted to ensure that the film will not be destroyed, and it is appropriate to spray the soil at a depth of 1 cm.

With spraying herbicide with buckle film, generally use 0.008 mm film, manual or mechanical cover can be. If the artificial film mulching, to a group of 3 people, the film will be tightened, close to the ground sealed, every 2 murals 3 meters away to press a horizontal piece of soil.

6. in the field management, when the corn seedling grows to two leaves, the seedling is drawn out of the film and then fixed according to the growth of the seedling, leaving a healthy seedling. Pay attention to the control of corn borer in the middle stage of growth, and use granules to control the first generation of corn borer to ensure that the ear is intact.

7. Economic benefit analysis of the next crop, green corn covered with plastic film on the previous crop, late cloud bean, cucumber, summer corn, summer soybean and so on can be planted in the next crop. The annual income per 667 square meters is 500 won 800 yuan more than that of planting a crop of spring corn, and the high one can be 1000 yuan more.