First, how to plant a good sorghum
1. Strong anti-drought and anti-mite ability: The most important feature of sorghum is that it is drought-resistant and resistant to picking. In 1997, the sorghum harvested a good drought. In 1998, in addition to sorghum soybeans in the low-lying fields, other dry-land crops basically failed to harvest.
2. The requirements for water and fertilizer are not high, and fertility is also insufficient for high yields: Due to the rapid development of agricultural mechanization and rapid development of manganese, plus the implementation of the land management law, it is becoming increasingly difficult for the farmer to accumulate fertilizers. The sorghum varieties do not cast farmyard manure, apply chemical fertilizers, and chase two or three times. Foliar fertilizer can also achieve high yields.
Second, cultivation technology
1. Seed selection: According to the characteristics of the land to use the seeds, we must use the seeds of national promotion. The seeds should be smooth, glossy, free of small particles, and have a short description of the origin, quality, and yield.
2. Seed germination method: The germination of sorghum seeds is a more meticulous work. Soak the seeds in warm water of 20-30°C for 3-4 hours. Put the seedlings directly on the pots. Heat the pot at 15°C. Pour water and stir with a wooden stick until it is not hot. Cover them with lids. After 3-4 hours, the raw water is filtered out, rinsed once with warm water, packed in a woven bag, placed on a hot pot, and kept warm at 15°C. The upper side is covered with clothing and the like. Washed once with warm water every 3 hours, quiescent buds in about 24 hours, budding buds in 36 hours.
When seedlings have just cracked the seed coat and 5% of shoots are exposed, put it in a thin layer on a well-ventilated place. Turn it around and take root and shoots as the basis. Remove the dead shoots and mix it. The cloth can be sown. In this way, both the first bud and the sub-coating agent are broken off, and the early sprouting of the sprouts is promoted. The seeds of the root buds must be sowed quickly and broadcast within 6 hours. Must sit water.
3. Sanlichuan sits on water: The first plough of the Sanlichuan River is a deep furrow ridge ridge, where the nitrogen and potassium fertilizers are applied to the bottom and the phosphate fertilizer is applied to the top. The second plow broke the original ridge and got a new ridge. After 4 hours press the rake to ensure the third plough is sown. Fertilizer can be applied at the ratio of NPK:1.5:2:1. The third plough first opened the ridge table, poured a sufficient amount of water, and used the hand to spot the primed seeds. It is best not to sow the shoots with a sowing machine. Then cover the soil, cover the thickness of 4 cm or less, over 6 hours with a pressure device to suppress the pressure, so that the seed sowing seedlings fast, homogeneous and strong, 7 days to the whole seedlings, to avoid powder caused by low temperatures. Hard to take a deduction method to take water to germinate seeds.
4. Chemical weeding: chemical weeding should be carried out within 3 days after sowing, spraying 3-3.5 kilograms per day with 400 to 500 kilograms of water to dilute water, such as dry weather, to spray clean water within two days of spraying. Wet the ground with a flat finger deep to improve the herbicidal function.
Spray 72% of the 2.4D-butyl ester weeding, first do small-scale experiments, and then use a large area. When the seedling height is 3 cm, 0.75 kg of 2.4 D-butyl ester is sprayed per hectare, but it can only be used in the heavier regional plots of broadleaf weeds. Manual removal of the coniferous grass must be carried out.
5. Prevention and treatment of disease at seedling stage: sorghum disease rarely occurs in seedling stage, white spot disease occurs in special years, and 0.075 kg of zinc sulphate and 0.05 kg of urea are treated with 15 kg of water per mu.
6. Dingling in time, digging shovels, timely fertilizer: chemical weeding plots, seedlings have four true leaves when Dingmiao. Manual weeding should be done with three true leaves in the seedlings combined with shovel to set a good seedlings. Disease should pay attention to insect pests and find that it is immediately exterminated with methamidophos. After the small seedlings are drawn out, they are squatted one by one with a small bowl. The deeper the better. After the seedlings were used, 1 was used. Two shovels or two shovels and four picks must be shovelled, and a fertilizer should be combined with Dafeng Ridge to recover 200 kg of diammonium phosphate.
7. Control locusts: elimination of aphids must be based on prevention. The method was to spray the phoxim at the end of June with a phoxim cap as a measuring cup, 0.05 kg of diammonium phosphate per 4 cups of medicine, 15 kg of lobular enemy 0.05 kg, and 30 kg of water per mu. In mid July, the use of Dimethoate Prevention 1 times, with a bottle of Dimethoate as a measuring cup, 4 cups Dimethoate plus 0.075 kg of diammonium phosphate, Taiwanese high yield Po 0.05 kg watered 15 kg, 30 kg per mu water. In the second half of July, there will be another one, 4 cups of Lego plus 0.05 kg of double-effect micronutrient, 0.05 kg of urea will be mixed with 15 kg of water, and 30 kg of water will be used per mu. Prevention should be late as soon as possible, after entering in August, spraying must pay attention to safety, to prevent poisoning and heat stroke.
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