Physical structure regulating method of high-yield soil for summer corns
A technology of physical structure and summer corn, applied in botany equipment and methods, soil preparation methods, horticulture, etc., can solve the lack of quantitative description of cultivation depth and soil physical indicators, affect the sustainable development of national food security, and the ability to accept natural precipitation reduce problems such as increasing water storage and fertilizer retention capacity, increasing crop yield and benefit, and reducing surface runoff
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[0012] Example 1
[0013] The inventors used the method of the present invention to carry out experiments for many years in the Science and Education Park of Henan Agricultural University. The micro-area simulation test was used to artificially simulate the suitable soil bulk density of each layer after deep ploughing or deep loosening, that is, the bulk density of the 0-20cm soil layer was designed to be 1.2g / cm 3 , The bulk density of the 20-40cm soil layer is designed to be 1.3g / cm 3 . When sowing corn, it is required to sow in wide and narrow rows, with a spacing of 75cm between wide rows and 45cm between narrow rows. In the jointing period after emergence, combine fertilization for soil cultivation and ridge ridges, ditching in the wide rows of corn, narrow rows of soil and ridges, ridge height 20cm, 45cm wide. Close to the actual bulk density design (control) 1.2g / cm 3 (0-20cm) and 1.6g / cm 3 (20-40cm) A comparative test was conducted to investigate and analyze the benefic...
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[0033] Example 2
[0034] Use the method of the present invention to carry out a field test in the experimental field of the Agricultural Research Institute of Jun County, Henan Province:
[0035] Experimental group: Before planting the first crop of summer corn, deep plow the soil at a tillage depth of 30cm, so that the bulk density of the soil plow layer of 0-20cm is 1.2g / cm 3 , The bulk density of the soil plow layer of 20-30cm is 1.3-1.4g / cm 3 , 15 kilograms of urea per mu. When sowing corn, it is required to sow in wide and narrow rows, with a spacing of 70cm between wide rows and 40cm between narrow rows. In the jointing period after emergence, 7Kg / mu of N fertilizer shall be applied at the seedling stage, cultivating soil and ridges, ditching in the wide rows of corn, and soil cultivation in narrow rows. The ridge is 15cm high and 40cm wide.
[0036] Control group: Before planting the first crop of summer maize, the soil tillage depth was 20 cm, and 15 kg urea was applied per...
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[0038] Example 3
[0039] The method of the present invention was used to conduct field trials in Chencao Township, Xuchang County, Henan Province:
[0040] Experimental group: Deep plow the soil before planting the first crop of summer corn, the tillage depth is 35cm, so that the bulk density of the soil plow layer of 0-20cm is 1.3g / cm 3 , The bulk density of the soil plow layer of 20-40cm is 1.3-1.4g / cm 3 , 15 kilograms of urea per mu. When sowing corn, it is required to sow in wide and narrow rows, with a wide row spacing of 75cm, and a narrow row spacing of 45cm. After the emergence of the jointing stage, cultivating soil and ridging, ditching in the wide rows of corn, narrow rows of soil and ridging, ridge height 18cm, ridge width 45cm.
[0041] Control group: Before planting the first crop of summer maize, the soil tillage depth was 20 cm, and 15 kg urea was applied per mu. When sowing maize, it is required to sow in wide and narrow rows, with a spacing of 70cm between wide ro...
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