Detailed Explanation of Black Rice Planting Techniques and Management Methods
Black rice is a distinctive rice variety formed through long-term cultivation. It is rich in nutrients and also has extremely high medicinal value. In daily life, it is often used to make congee, nutritional foods, and wine, and enjoys the reputation of "black pearl" in the world. So how is it planted? Let's take a look together with QinNong.com.
1. Sowing and Seedling Raising
Black rice differs from other rice varieties in that it is a temperature-sensitive variety, and its sowing has relatively strict climate requirements. Generally, the sowing time is in mid-March, so as to extend its growth period and allow it to head and flower in time before high temperatures arrive. Otherwise, if high temperatures arrive before it has headed, yield and quality may be affected. Before sowing, the seeds should be sun-dried and soaked in warm water to increase the germination rate, so that seedlings emerge uniformly and grow and develop well. Choose a sandy loam field that is sheltered from the wind, faces the sun, and has convenient drainage and irrigation for sowing. Sow appropriately thinly at sowing time, which helps cultivate strong seedlings. Generally, 4-4.5 kg is sown per mu of seedling field, and 1.5 kg is sown per mu of main field.
2. Rational Transplanting
When the seedlings grow to 15 cm, they can be transplanted. When transplanting, use an east-west orientation, wide rows and narrow plant spacing, and transplant large seedlings with soil. Also pay attention to transplanting density. The number of transplanted seedlings per mu should not exceed 300,000 plants, so that they no longer tiller. The plant-row spacing is 10 cm × 22 cm. This can increase ventilation and light transmission between plants, and also make reasonable use of the field soil resources, which is conducive to robust plant growth and improves yield and quality.
3. Increase Application of Phosphorus and Potassium Fertilizers
Black rice requires different levels of fertility at each growth stage, and if you want to increase its yield, timely increased application of phosphorus and potassium fertilizers is an important measure. Phosphorus fertilizer is mainly applied as base fertilizer. Potassium fertilizer application can be combined mainly with the first cultivation and weeding, and later selective topdressing can be carried out according to the plant's growth condition. At the booting stage, a small amount should be supplemented, and it should not be applied excessively at one time. After the heading stage, phosphorus and potassium fertilizers can be topdressed by leaf spraying. Mix phosphorus and potassium fertilizers with water to prepare a low-concentration solution and spray it on the leaves, with excellent results. In addition, pay attention to the application of calcium substances. If black rice absorbs excessive calcium substances, its grains will become rough and the taste will be affected, so lime should be applied sparingly or not at all.
4. Use Pesticides as Little as Possible or Not at All
Nowadays, the prevention and control of rice diseases and insect pests is mainly carried out through pesticides, but pesticides leave residues in rice. When these residues are small, the harm to the human body is relatively minor, but continuous accumulation will still affect human health and will also reduce the quality of black rice. Therefore, when planting black rice, try to use agricultural control as the main prevention and control measure. Whether it is diseases and insect pests or other problems, the goal is to eliminate diseases and insect pests and solve the problems without pesticide residues. In addition, black rice should be harvested in time. Once harvesting is delayed, it will affect the quality of black rice and affect the taste.
The above is the black rice planting techniques brought to you by QinNong.com. I hope it can help you. To learn more about rice planting knowledge, please stay tuned to QinNong.com.