Spring corn planting method in rain-fed dry-farming area of Heilonggang area

Abstract

The invention discloses a spring corn planting method in a rain-fed dry-farming area of the Heilonggang area. The method comprises the following steps: step 1, preparation before planting: 1) base fertilizer applying; 2) soil preparation; 3) ridging and laminating; 4) seed selection; 5) seed coating or seed dressing with insecticidal sterilization drugs; step 2, corn planting: planting the corn in ditches on two sides of each membrane, row spacing being 40cm, planting distance being 24-30cm, planting density being 4000-5000 plants per mu, wherein the row spacing and sowing depth are uniform, sowing depth being 3-5cm, and compression after sowing; step 3 field management after sowing; step 4, harvest; step 5, surface coverage. According to the novel corn planting method, planting is carried out besides the ridging membranes, temperature-raising, water-retention and salt-avoiding effects are realized, plants are robust, lodging resistance is realized, the plant dry weight, leaf area index and yield per mu are high, the density difference reaches a significant level, which is different from other planting patterns, the stable and high corn yield can be achieved under complete rain-fed dry-framing conditions, the membranes and straws are left to cover the field after the harvest, ground evaporation is reduced, soil water is retained, and the normal sowing of ensuing wheat can be guaranteed.

Description

technical field [0001] The invention mainly relates to agricultural production in the rain-fed and dry-farming area of ​​the Heilonggang River Basin, in particular to a spring corn planting method in the rain-fed and dry-farming area of ​​the Heilonggang River Basin. Background technique [0002] my country's Heilonggang River Basin mainly refers to the low plains around the Bohai Sea in Hebei Province, Shandong Province, and Tianjin City. This area is located in a warm temperate zone and rich in light and heat resources. It is an important agricultural planting area in the country, involving more than 30 million mu of cultivated land. More than 60% are medium and low-yielding fields. The annual rainfall in this area is generally 400mm-600mm, and more than 80% of the rainfall is concentrated between July and September. [0003] Traditional spring corn planting has the following disadvantages: [0004] 1. The traditional method of planting spring corn is equal row spacing ...

AI Technical Summary

Problems solved by technology

The traditional planting method is affected by the low and unstable ground temperature during the sowing period, which leads to slow seedling emergence, prone to uneven seedlings, weak seedlings, etc., resulting in reduced yield;

[0005] 2. The traditional planting method is often caused by the drought and lack of rain from the middle and late May to the middle and late June, which causes the "stuck neck drought" of spring corn in the critical period of water and fertilizer requirements (stuck neck drought refers to related corn, etc.) Drought crops suffer from drought during the booting stage, and the tassels or ears cannot be pulled out, which seems to be stuck), resulting in reduced or even complete production, which restricts people's enthusiasm for planting spring corn

[0006] 3. There is more than a month of bare period between the harvest of spring corn and the sowing of wheat. The ground transpiration is large and the water loss is serious. If there is no sufficient rainfall, the normal sowing of winter wheat, the subsequent crop, cannot be guaranteed. It can only be planted once a year, causing a large number of Arable land is idle

[0007] In short, in the rain-fed and dry-fed area of ​​the Heilonggang River Basin, the traditional spring corn production and planting technology has a low yield, which greatly affects the agricultural production in this area, restricts farmers' increase in production and income, and brings hidden dangers to national food security.

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