Sorghum is not strict with soil requirements, regardless of sandy loam soil, heavy clay, slightly acidic soil and saline-alkali soil can be planted. However, when growing on too thin soil and saline soil, reasonable fertilization should be paid attention to. Since Sorghum is mainly used for fodder for its feed, there is no strict restriction on the sowing time. When the topsoil reaches a temperature of 12°C to 16°C at 10 cm, seeding can be started. However, it is better to choose the length of sunshine greater for the photoperiod sensitive species. 12 hours and 20 minutes of the season sowing to obtain a longer period of vegetative growth, the most suitable soil temperature is 16 °C or higher. Seeding methods are mostly drilled, spacing 40-50 cm, sowing depth 1.5-5 cm. The recommended seeding rate is 1.5-3 kg/mu. Tests have shown that under the seeding rate of less than 53.8 kg/ha (3.6 kg/mu), appropriate increase in the amount of sowing is conducive to increase the yield, but the seeding rate is higher than 53.8 kg/ha. It does not benefit the increase in production. Instead, it increases planting costs and wastes seeds. Sorghum has a well-developed root system and needs to absorb large amounts of nutrients from the soil during growth. Therefore, the soil should be deeply ploughed and organic fertilizer should be applied before planting. The fertilizer should include nitrogen, phosphorus and potassium fertilizers. The amount of nitrogen fertilizer is 50-80 kg/ha. Accelerate the establishment of plants and meet the needs of early growth. After the first cutting, combined with the application of 40 kg/ha of nitrogen fertilizer, nitrogen fertilizer should be applied 1-2 times depending on the actual conditions, especially during the tillering, jointing and after each cutting. Timely irrigation and topdressing available nitrogen fertilizer. During the seedling stage, we should pay attention to cultivating and weeding. When there is a tillering, we are not afraid of weeds. In order to increase the yield and quality of green feed and reduce nutrient consumption, it can be mixed with leguminous crops or annual legumes.
Glyphosate is a kind of non-selective, no residual sterilant herbicides, root weeds is very effective for many years, is widely used in rubber, orchards, mulberry, tea and sugar cane.Main inhibition of enol acetone in plant base shikimic phosphate synthetase, thus inhibiting shikimic element to the transformation of phenylalanine, tyrosine and tryptophan to distract protein synthesis, cause plant death.Glyphosate is through stem conduction to each part of the plant after absorption, can control the single cotyledon and dicotyledonous, annual and perennial, herbs and shrubs more than 40 families of plants.Glyphosate the grave after combined with iron, aluminum and other metal ions and soon lose activity, hidden in the soil of seed and soil microbial without adverse effects.
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