A corn planting method of secondary compacting seed

Abstract

The present application relates to a kind of secondary compaction corn seeding method to seed.The present application seeding method includes the following steps: first compaction: after sowing, before covering soil, seed is first compressed, second compaction: seed is second compressed after covering soil.The present application carries out secondary compaction to corn seed, and emergence rate is increased by more than 5%, drought resistance, anti-lodging capacity is strengthened, and the effect of guaranteeing emergence rate and grain yield is obvious, with good popularization and application value.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of agricultural planting technology, in particular to a corn planting method for secondary compression of seeds. BACKGROUND

[0002] The conventional corn planting method is rotary tillage, ridging, ditching, seeding, soil covering, and finally compression. The seeds fall into the seed ditch, and then the soil is covered on the seeds, with a soil covering thickness of 5-7 cm. Finally, the soil on the seeds is compressed, and the soil thickness after compression is 3-5 cm. The compression effect of the soil covering is that the closer to the surface, the more compact the soil is, and the farther from the surface, the looser the soil is. The soil where the seeds are located is loose, which cannot be in close contact with the soil, which is not conducive to the seed absorbing water and germination in the soil. Seed germination and growth in the soil basically require absorbing water and fertilizer in the soil, so it must be in close contact with the soil to quickly absorb water in the soil. If the soil around the seeds is loose, the effect of absorbing water is not good, which is not conducive to germination and emergence.

[0003] This method of one-time compression of corn seeds will cause some seeds not to fall to the bottom of the ditch, resulting in inconsistent soil covering thickness. In years with sufficient soil moisture, the seeds close to the surface emerge early, and the seeds far from the surface emerge late, resulting in different corn seedling heights. The shorter corn plants receive less sunlight and absorb less fertilizer, resulting in more height differences and affecting yield. In years with insufficient soil moisture, the soil around the seeds is loose, the soil water retention capacity is poor, and drought is easily caused, resulting in low emergence rate. Even if the seeds germinate and emerge, the roots are not firm and not developed, affecting growth and not resistant to lodging. SUMMARY

[0004] The purpose of the present application is to provide a corn planting method for secondary compression of seeds, which effectively overcomes the problems of poor seed germination, uneven emergence, poor growth, and resistance to lodging.

[0005] The technical solution of the present application is as follows:

[0006] A corn planting method for secondary compression of seeds, comprising the following steps:

[0007] First compression: one-time compression of seeds before soil covering after seeding,

[0008] Second compression: secondary compression of seeds after soil covering.

[0009] The beneficial effects of the present application are as follows:

[0010] The corn planting method is basically to form ridges after soil rotary tillage, then to sow seeds and to press, after rotary tillage, the soil is loose, the soil is fine, after sowing, the step of pressing can only compact the surface soil, and the soil around the seeds is not compacted, the soil water retention capacity is poor, the seed water and fertilizer absorption condition is poor, the root system is not solid, which not only affects the emergence, but also is prone to lodging in the middle and later stages. Compared with the prior art, the application increases a pressing step before covering soil after sowing, that is, after the seeds fall to the ground, the corn seeds are pressed once, the seeds are pressed to the bottom of the seed furrow, the seeds are in close contact with the soil, then the soil is covered and pressed again, so that the soil around the seeds is compacted, the pore is reduced, the soil moisture is retained, and good conditions are created for seed germination and growth.

[0011] The application presses the corn seeds twice, the emergence rate is increased by more than 5%, the drought resistance and lodging resistance are improved, the grain yield is improved, and the application has good popularization and application value. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic diagram of the first pressing step of the planting method of the application.

[0013] Figure 2 It is a schematic diagram of the second pressing step of the planting method of the application. DETAILED DESCRIPTION

[0014] In view of the corn sowing method in the background art, the soil is pressed once after sowing and covering, so that the soil around the seeds is not compacted, is prone to drought, and the emergence rate is low, and the corn seed second pressing technology is invented.

[0015] The corn planting method will be described in detail below:

[0016] (1) Land preparation: before sowing, including three aspects, namely, loosening soil, preparing seedbed and compacting seedbed, the main purposes are: one is to loosen the tillage layer soil, increase the soil permeability, improve the soil temperature, promote the soil microbial activity and reproduction, and be beneficial to seed germination and growth; two is to level the seedbed, so that the ground surface is flat, to create superior conditions for sowing and ensure uniform sowing depth; three is to compact the seedbed, so that the tillage layer soil is compacted, the soil moisture is protected, and enough water and fertilizer is provided for seed germination and emergence; the requirements are: one is that the loosening tillage layer depth reaches about 15 cm, the soil is fine, and the maximum soil block diameter is less than 5 cm; two is that the seedbed flatness, the height difference within 1 m is not more than 5 cm; three is to compact the seedbed, the soil bulk density within 5 cm after compaction is not more than 1.1-1.2 g / cm 3 , the upper part is compacted and the lower part is loose.

[0017] (2) ditching: the ditching depth is determined according to the sowing depth, the ditching depth of sandy land is 6-7cm, and the ditching depth of clay land is 5-6cm; the ditch shape is wide at the top and narrow at the bottom, the top width is 4-5cm, and the bottom width is 1-2cm.

[0018] (3) sowing: sowing is carried out synchronously with sowing ditching, the seeds are sown in the seed ditch, and the sowing density or sowing amount is determined according to the characteristics of the corn variety.

[0019] (4) first pressing: after the seeds fall into the seed ditch, the first pressing is carried out, the seed is pressed by the pressing wheel after the seed is sown in the seed ditch, the seed is pressed to the bottom of the seed ditch, and the seed is in close contact with the soil at the bottom of the seed ditch. The pressing intensity is determined by the water content of the soil, when the water content of the soil is greater than 20%, the pressing force is 300-500g / cm 2 , when the water content of the soil is less than 20%, the pressing force is 500-700g / cm 2 .

[0020] (5) covering: the soil is covered above the seeds, the covering depth is different for different soil, the covering depth of sandy land is 6-7cm, and the covering depth of clay land is 5-6cm;

[0021] (6) second pressing: after covering, the second pressing is carried out, the pressing wheel is used to press the seed from both sides of the seed to the direction of the seed, so that the soil around the seed is compacted, and the effect of close contact between the seed and the soil is achieved. The soil above the seed close to the ground surface is not pressed, which is loose and has pores, which is beneficial to seedling emergence. The covering depth after pressing is 3-5cm (the distance between the seed and the ground surface).

[0022] The planting method of the application carries out the first pressing after the seed falls into the ditch without covering, which presses the seed into the bottom of the seed ditch, so that the seed is in close contact with the soil, and then covering and second pressing are carried out, which overcomes the disadvantages of the prior art of covering and first pressing. The disadvantages of too loose soil after rotary tillage and rapid loss of soil moisture are reduced, the soil moisture conservation capacity is significantly improved, good conditions are created for seed germination and growth, and a good foundation is laid for yield increase and income increase.

[0023] In the first pressing step, the seed is directly pressed to the bottom of the seed ditch 3 by the pressing wheel 1, so that the seed is in close contact with the soil. After the second pressing step, the second pressing of the application is not the existing pressing roller directly pressing on the covering, but two pressing wheels 1 pressing from both sides of the seed 2 to the direction of the seed, the pressing wheel pressing the soil around the seed, so that the soil around the seed is compacted, and the soil above the seed close to the ground surface is still loose. In this way, after pressing, it is beneficial for the seed to absorb water and oxygen in the soil, and the soil above the seed is loose, which is beneficial for the seed to break the soil and emerge.

[0024] The application will be further described below in connection with specific embodiments, which are implemented on the premise of the technical scheme of the application, and it should be understood that these embodiments are only used to illustrate the application and not to limit the protection scope of the application.

[0025] Example 1

[0026] The corn planting method of secondary seed pressing is as follows: when corn is planted, the seed is pressed twice, the first pressing is performed after the seed falls to the ground, and the second pressing is performed after the seed is covered with soil. The following table shows the implementation effect in sandy loam soil.

[0027] The specific implementation method is as follows:

[0028] 1. Basic situation

[0029] In 2022, Haiwen Family Farm contracted field in Shenyang Township, Lishu County. The terrain is flat, the soil is sandy loam, the plough layer is about 15 cm, the nutrient content is medium to low level, and the planted crop is corn.

[0030] 2. Implementation process

[0031] The test field has an area of 5hm 2 , the variety is Nonghua 803, the seed germination rate is 96%, the purity is 99%, the purity is 97%, and the seeds are sown on May 5. The seed is pressed twice, the first pressing is performed after the seed falls to the ground, the pressing intensity is 500g / cm 2 , the second pressing is performed after covering the soil, the pressing intensity is 600g / cm 2 , and the seedling emergence is checked on May 20. The comparison field has an area of 15hm 2 , the variety is Nonghua 803, the seed germination rate is 96%, the purity is 99%, the purity is 97%, and the seeds are sown on May 5. The seed is pressed once, which is performed after covering the soil, the pressing intensity is 600g / cm 2 , and the seedling emergence is checked on May 20. (See the table below)

[0032]

[0033] Example 2

[0034] Example 2 and example 1 have the same method, except that the soil is different, which is performed in black calcareous soil. The following table shows the implementation effect in black calcareous soil.

[0035] The specific implementation method is as follows:

[0036] 1. Basic situation

[0037] In 2022, the Jilin Pears Experimental Station of China Agricultural University, Liushu Town, Liushu County. Flat terrain, black calcareous soil, plough layer about 15 cm, medium level of nutrient content, corn as the planted crop.

[0038] 2. Test field, area of 5hm 2 , variety of Fumin 105, seed germination rate of 96%, purity of 99%, purity of 97%, sowing on May 8, using seed secondary compression method, first compression after seed landing, compression intensity of 400g / cm 2 , second compression after covering soil, compression intensity of 600g / cm 2 , checking seedling situation on May 22; comparison field, area of 5hm 2 , variety of Fumin 985, seed germination rate of 97%, purity of 99%, purity of 97%, sowing on May 8, using seed first compression method, after covering soil, compression intensity of 600g / cm 2 , checking seedling situation on May 22; (see table below)

[0039]

[0040] The above is only the best embodiment of the present application, the method of the present application includes but is not limited to the above embodiments, the unfinished matters of the present application belong to the common knowledge of those skilled in the art.

Claims

1. A corn planting method with secondary compaction of seeds, characterized in that it comprises the following steps: primary compaction: a primary compaction of seeds before soil covering after sowing, secondary compaction: a secondary compaction after soil covering of seeds, wherein the secondary compaction step is performed by applying pressure to the seeds from both sides using two compaction wheels after soil covering of seeds, so as to compact the soil around the seeds.

2. The corn planting method with secondary compaction of seeds according to claim 1, characterized in that the corn planting method comprises the following steps: land preparation: a land preparation step is performed before sowing, including loosening, seedbed preparation and seedbed compaction, loosening: the loosening depth is about 15 cm, the soil is finely broken, and the maximum diameter of soil clods is less than 5 cm, seedbed preparation: the flatness of the seedbed is within 1 m in horizontal distance, and the height difference is not greater than 5 cm, seedbed compaction: the surface soil bulk density after seedbed compaction is 1.1-1.2 g / cm³, and the upper layer is compacted and the lower layer is loose, (2) ditching: the ditching depth is 6-7 cm for sandy soil and 5-6 cm for clay soil; the ditch shape is wide at the top and narrow at the bottom, with a top width of 4-5 cm and a bottom width of 1-2 cm, (3) sowing: seeds are sown in the seed ditch simultaneously with ditching, and the sowing density or sowing amount is determined according to the characteristics of the corn variety, (5) soil covering: the soil is covered above the seeds, and the soil covering depth is different for different soil types, with a soil covering depth of 6-7 cm for sandy soil and 5-6 cm for clay soil, (6) secondary compaction: a secondary compaction is performed after soil covering, the soil around the seeds is compacted, and there is no pore in the soil around the seeds after compaction, so as to achieve the effect of close contact between the seeds and the soil, and the soil covering depth after compaction is 3-5 cm. ​ The primary compacting step is that after the seeds are sowed into the seed furrows, the seeds are rolled by the compacting wheel to press the seeds to the bottom of the seed furrows, so that the seeds are in close contact with the soil at the bottom of the seed furrows; the compacting strength is determined by the water content of the soil, when the water content of the soil is greater than 20%, the compacting force is 300-500 g / cm 2 , and when the water content of the soil is less than 20%, the compacting force is 500-700 g / cm 2 . ​ ​ The secondary compacting has a compacting force of 500-700 g / cm 2 . ​ ​ ​ ​ ​ ​ ​ ​ (4) One time suppression: the seed falls into the seed ditch, and the first time suppression step is to roll the seed by the suppression wheel after the seed is sown into the seed ditch, and the seed is pressed to the bottom of the seed ditch to make the seed closely contact with the soil at the bottom of the seed ditch. The suppression strength is determined by the water content of the soil. When the water content of the soil is greater than 20%, the suppression force is 300-500 g / cm 2 , and when the water content of the soil is less than 20%, the suppression force is 500-700 g / cm 2 ; ​ ​

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