Spring sowing is approaching. Due to the impact of less snow in warm winter last year and less rainfall in spring, it is expected that serious soil drought may occur this year, which has brought great difficulties to the planting of the big autumn crops. How to ensure that all seedlings and seedlings are sown at one time is the most important issue facing our peasant friends. Here's a point to talk about this year's spring corn sowing points:
I. Site preparation before broadcast
In order to ensure that the soil is pressed, hoeed, covered, and other continuous operations before sowing, the soil is compacted, and it plays a role in lifting the soil.
Second, according to local conditions
Choose a good hybrid for local use. Practice has proved that good varieties are prerequisites for high yields. With excellent hybrids, higher yields can be achieved without increasing labor and fertilizer. According to statistics, corn varieties accounted for the largest proportion in various production increase measures, generally accounting for 25-30%. In recent years, the spring maize hybrids promoted in Hebei Province are Jiyuan 128, Kuancheng 60, Great Wall 799, Jiyuan 1, Danyu 96, Danyu 69, Jidan 7, Nongda 95, Fengdan 6 and so on. The most crucial point for choosing a good seed is that the growth period of the seed should be consistent with the local frost-free period, or that the growth period of the improved seed is less than the frost-free period, otherwise it will not be able to mature normally.
Third, seed preparation before broadcast
The corn seeds currently sold in the market are all coated seeds, which do not require any treatment before seeding, but it is important to emphasize that the seed should not be directly touched by hand to prevent poisoning, because the seed of the coating is Treated with pesticides.
Fourth, sowing
1, suitable for sowing. When the 5 cm ground temperature stably passes 12°C, the spring corn is planted for an appropriate period. Seeding too early and late is not good for corn growth. In the northwest dryland of Hebei Province, there is little rain and windy spring, and the soil loses moisture quickly. When the soil temperature reaches the appropriate temperature for planting, the soil is often dried. In this case, the soil moisture content should be taken into account, and the seeding should be appropriately advanced. Soil temperature can be sown when stable above 8°C. When the soil temperature is not stable, sowing too early, easy to cause bad species, easy to lack seedlings off ridge, seedling growth is also slow, but also easy to infect corn smut, so the sowing can not be premature. The suitable sowing date for spring maize in Hebei province is generally around mid-April. It is generally late in the morning in the south, early in the plain, and late in the mountains.
2, drought seeding. Most of the spring maize areas in Hebei Province are rain-fed agriculture, and there are no irrigated conditions. In terms of soil moisture this year, the following three drought-resistance sowing methods are generally adopted:
(1) sowing seeds. Also called 撵墒 sowing. In the upper layer of the soil without flaws, and under the condition of a good lye in the lower layers, the dry soil was sown and the seeds were sowed on the wet soil, covered appropriately, and then repressed after sowing. In areas with arid and windy weather, deep ridges can be planted on the sowing line to prevent the wet soil from drying out. After the seeds have germinated and become rooted, they can uncover more buried dry soil and help the seedlings unearth.
(2) Make up for sowing. That is, sit water on demand. In the case of difficult planting, use all water sources available for spotting. Dig a hole with a spade, point the water, soak the water after sowing, and then cover the soil. It needs to be emphasized that in order to ensure adequate number of seedlings in arid regions due to seedling difficulties, the amount of seeding should be increased, generally increasing 1-2 seeds per hole.
(3) Wait for rain sowing. If neither of the above two methods can be sown, it is only waiting for the rain to sow, so it is necessary to pay attention to the weather forecast at any time. There are two kinds of sowing methods. One is sowing after rain. After effective rainfall, the soil is suitable for sowing immediately after field operation, and no sowing is required after sowing; the other is sowing before rain and sowing after rain. Wuyuan County, Baoding City, Hebei Province, generally adopts these two sowing methods for the sowing of spring corn.
V. Pre-emergence management
Before the emergence of the soil if the soil is compacted, especially in case of acute rain before emergence, resulting in soil compaction, the compaction shall be removed by pressure, and the seedlings shall be excavated in time.
The one-year plan is spring. It is now a crucial period for spring planting and sowing. I hope that the majority of farmers will adopt appropriate anti-drought sowing methods in combination with the climate characteristics of this year to improve the quality of sowing, and to achieve seedling quality, Miao Qi, Miao Lian, and Miao Zhuang. , To lay a solid foundation for the high yield of corn, to seize the abundant harvest of spring maize in our province.
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