How to grow sorghum on dry land? A detailed explanation of the key cultivation techniques
How is sorghum grown on dry land? Please explain the cultivation methods. For growing sorghum on dry land, you can refer to the following methods: I. Pre-sowing preparation. 1. Land preparation: after the autumn harvest, for fields with good soil moisture, apply 1500-2000 kg of farmyard manure per mu in combination with autumn plowing, and harrow and level the soil promptly after plowing to preserve moisture; for fields with poor soil moisture, you may skip plowing or ridge up, and harrow the soil in early spring so that the surface is level and the soil is fine, loose on top and firm below, preserving soil moisture...
How is sorghum grown on dry land? Please explain the cultivation methods.
For growing sorghum on dry land, you can refer to the following methods:
I. Pre-sowing preparation
1. Land preparation: after the autumn harvest, for fields with good soil moisture, apply 1500-2000 kg of farmyard manure per mu in combination with autumn plowing, and harrow and level the soil promptly after plowing to preserve moisture; for fields with poor soil moisture, you may skip plowing or ridge up, and harrow the soil in early spring so that the surface is level and the soil is fine, loose on top and firm below, preserving soil moisture.
2. Variety selection: choose superior varieties with high purity, strong germination vigor, and a germination rate above 85%, such as Aza 1, Chiyu 7, Tongza 2, etc.
3. Seed treatment: use coated seeds. If the seeds are not coated, they should be coated to prevent and control pests and diseases.
II. Sowing
1. Sowing time: sow from late April to early May, and at the same time, according to soil moisture conditions, adapt to local conditions and sow early at the right time.
2. Sowing rate: 1-1.5 kg per mu.
3. Sowing method: plant spacing and row spacing of 30-33 cm x 40 cm, with 5000-5500 seedlings per mu.
4. Increase seed fertilizer: apply 10 kg of diammonium phosphate plus 3 kg of urea per mu, and never let chemical fertilizer come into contact with the seeds.
III. Field management
1. Seedling stage: promptly thin the seedlings, establish the final stand, and cultivate and weed. Thin seedlings at the 3-4 leaf stage, establish the final stand at the 5-6 leaf stage, and combine thinning and stand establishment with cultivation and weeding.
2. Middle and late stages: during the jointing stage, ridge and earth up the soil. Apply the jointing fertilizer heavily in good time (9-10 leaf stage). Generally, fertilizer can be applied together with ridging, with 10-12 kg of urea applied per mu as a top dressing. It can also be split into two applications: the first is a heavy jointing fertilizer of 7-9 kg, and the second is a light booting fertilizer of 3-4 kg. For fields showing obvious fertilizer deficiency in the later stage, an additional grain-promoting fertilizer may be applied as appropriate.
IV. Timely harvest: harvest promptly when the late dough stage is reached.
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