Planting corn with this technology can increase the yield by 200 jin per mu!

Today, a wide and narrow row planting technique of corn is introduced for farmers. This technique is different from the traditional farming method, changing ridge as flat farming, changing uniform ridge to wide and narrow row, changing semi-precision sowing to precision sowing, rotation fallow every other year, high yield and high efficiency, which is worth a try.

The planting technology of maize with wide and narrow rows is to change the current tillage method of uniform ridge (65cm) planting into wide row 90cm and narrow row 40cm planting. Corn is deeply loosened in 90cm wide row combined with topdressing before jointing, and the seedling belt leaves high stubble in narrow row in autumn harvest (about 40cm).

After the autumn harvest, the wide row was rotated with a strip rotary tiller to reach the state of sowing, and the narrow row (seedling belt) left high stubble and naturally rotted back to the field. In the spring of the following year, the wide row after rotary tillage was sown to form a new narrow row seedling belt, and then ploughed deep pine and topdressing fertilizer in the new wide row, that is, the broad and narrow row cultivation of deep loosening, seedling belt rotation and alternative leisure was completed in the next year.

> this technology has the following characteristics:

1. Good ventilation, high light transmittance and obvious marginal effect.

2. the combination of flat cropping rotation and stubble returning to the field can not only prevent the erosion of windswept land and Rain Water, but also effectively protect the organic matter of the soil.

3. The field management changed from three shovels, three times and one time topdressing to one deep loosening top dressing, which reduced the operation link and area, reduced the activity cost by more than 30%, saved both labor and time, and saved the production cost.

4. The water storage capacity increases and the soil moisture conservation capacity increases. Compared with conventional ridge cultivation, the soil water content increased by 1.8% to 3.2%.

5. The density can be increased appropriately to increase the yield. Since its popularization and application, this technology has achieved good economic and ecological benefits and is deeply loved by farmers.

> scope of application:

It is suitable for popularization and application in areas with flat terrain or small slope and continuous land, but this technology is not suitable for hills and mountains.

> Technical points:

1. Leave high stubble and rot naturally to return to the field.

When harvesting corn straw, leave high stubble (about 40cm) and naturally rot back to the field (returning straw accounts for more than 30% of the total straw), and leave the stubble immobile. In the following year, it can increase soil organic matter, fertilize soil fertility and reduce soil wind erosion by wind blowing, sun exposure, rain drenching and freezing and thawing.

2. Wide row rotary tillage and soil preparation in autumn

After leaving the high stubble, the strip rotary tillage machine is used to prepare the land in the wide row, and the planting bed is flat, reaching the sowing standard. Direct sowing without soil preparation in spring is beneficial to preserving soil moisture and seedlings.

3. Precision sowing

Precision sowing refers to fine soil preparation and precision sowing, narrow row precision sowing refers to the implementation of precision sowing in last year's wide row on the basis of fine soil preparation in autumn, forming a new narrow row seedling belt (40cm), which can save seed consumption and reduce cost.

4. The stubble belt is wide and deep loose.

Before jointing, the width of deep loosening was 30~40cm and the depth was 30~40cm in the stubble belt (90cm wide row). At this time has entered the rainy season or began to enter the rainy season, when the deep pine can accept and store more precipitation, forming a soil reservoir. It can be used in autumn in summer and in spring in the coming year, and the utilization efficiency of natural precipitation can be improved.

The technical model diagram is as follows:

* Note:

1. Requirements for land preparation

In the first year, we planted wide and narrow rows, and in the autumn of the previous year, the land was rotated (raked) flat, reaching the state of sowing.

2. Requirements for planting density and fertilizer application

With the application of this technique, the planting density should be increased by 10% to 15% compared with the conventional planting density, and the amount of fertilizer should be increased by more than 10%.