Method for improving emergence rate of alfalfa planting in moderate saline-alkali soil in northern arid regions

[0032] The cultivation of alfalfa comprises the following steps:

[0033] (1) Before sowing, carry out laser leveling, deep loosening and leveling of the surrounding plots with irrigation and drainage conditions, and level the surface; before deep loosening, apply 750kg of hydrolyzed biochar, 750kg of desulfurized gypsum, 750kg of vinegar residue, 350kg of decomposed cattle and sheep manure and 400kg of commercial bio-organic fertilizer for soil improvement;

[0034] (2) Alfalfa was sown on July 20 by hole sowing, the sowing rate was 2kg / mu, and the sowing depth was 1.5-2.5cm;

[0035] (3) After sowing, the plots are irrigated and soaked in the field, and 0.8kg of citric acid is added to each mu of land, and it is applied to the soil together with the irrigation. The amount of irrigation should be 24 hours after soil irrigation. Drain the excess water from the surface of the field after an hour.

[0036] After 7 days of drainage, shallow groundwater well water was used for dr

[0038] The planting of alfalfa, the steps are as follows:

[0039] (1) Before sowing, carry out laser leveling, deep loosening, and level the surface of the plot; before deep loosening, apply 500kg of hydrolyzed biochar, 500kg of desulfurized gypsum, 500kg of vinegar residue, and 250kg of decomposed cow and sheep manure per mu. and 250kg commercial bio-organic fertilizer for soil improvement;

[0040] (2) Adopt the method of drill sowing, sow alfalfa on July 30, the sowing rate is 3kg / mu, and the sowing depth is 1.5~2.5cm;

[0041] (3) After sowing, irrigate the plot, and add 0.5kg of citric acid when irrigated per mu of land, and apply it to the soil together with the irrigation. The amount of irrigation should be 24 hours after the soil is irrigated. Then remove excess water.

[0042]After 10 days of drainage, shallow groundwater well water was used for drip irrigation to keep the field surface moist. After 30 days, the emergence rate was counted. The results are shown in T

[0044] The cultivation of alfalfa comprises the following steps:

[0045] (1) Before sowing, carry out laser flattening, deep loose plowing on the plot, and level the surface; before loose plowing, apply 750kg of hydrolyzed biochar, 750kg of desulfurized gypsum, 750kg of vinegar residue, 350kg of decomposed cattle and sheep manure and 400kg commercial bio-organic fertilizer for soil improvement;

[0046] (2) Adopt the method of hole sowing, sow alfalfa on July 20, the sowing rate is 2kg / mu, before sowing, soak the seeds in 30° warm water for 2 hours, dry the surface moisture of the seeds and sow again, the sowing depth is 1.5~2.5cm;

[0047] (3) After sowing, irrigate the plot, and add 0.8kg citric acid when irrigated per mu of land, and apply it to the soil together with the irrigation. The amount of irrigation should be 24 hours after the soil is irrigated. Drain excess field water.

[0048] After 7 days of drainage, shallow groundwater well water was used for drip irrigat