Mechanical sowing power to protect the whole seedling

There are many ways of sowing corn, but the most commonly used ones are seeding (on-demand), precision sowing, no-till sowing. The seeding is to seed the seeds into the soil according to the specified line spacing, plant spacing and sowing depth. Each spot is 2-3 seeds, which can ensure the uniform distribution of the seedlings in the field. Precision seeding refers to the use of precision seeding machinery to seed the seeds according to the precise sowing depth, spacing, and quantitatively into the soil to ensure that the number of seeds per hole is equal. Among them, the single-grain precision on-demand is â€œone hole and one grainâ€, the seeding density is the planned planting density, and the seed quality is high (the germination rate should be higher than 96%), because the seedlings are not used, the cost increase is significant, and the corn is sowed. The direction of technology development. No-till sowing is carried out after the harvest of the former crops, without ploughing or ploughing the land, the original stalks and wreckage are covered on the ground, and the special no-till seed drill is used to directly plant on the hoe. No-till seeding can reduce the number of soil cultivation and energy consumption, reduce soil compaction and damage, reduce wind erosion and water erosion, maintain bottom sill and reduce production costs. In order to effectively eliminate weeds and pests, herbicides and pesticides must be sprayed before and after sowing.

A seeding and preservation seedling is a prerequisite for achieving high yield and stable yield of corn. When planting corn, the agronomic requirements such as the amount of seeding, the distribution of seeds in the field, the depth of sowing and the degree of compaction after sowing should be considered. The first trial will be carried out. After the requirements are met, the field sowing operation will be carried out to ensure the quality of the sowing.

The planting patterns of the spring maize area in the north mainly include two methods: row spacing and wide and narrow row planting. Equal row spacing planting: row spacing is equal, generally 50 ~ 70 cm, plant spacing depends on density. Its characteristics are that the plants are evenly distributed in the field, which is convenient for mechanization, and is the dominant mode in the northern spring corn area. Wide and narrow row planting: also known as large and small ridges, the row spacing is wide and narrow, which is characterized by uneven distribution of plants in the field, and the loss of light leakage in the early stage is more, but it can regulate the contradiction between individuals and groups in the late corn. It is suitable for cultivation under high-density and high-fertilizer conditions and mulching cultivation. At present, the wide line spacing is 60-80 cm, and the narrow line spacing is 30-40 cm.

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