The soil moisture content at the time of sowing is appropriate to reach 60%-70% of the field water capacity. The suitable soil moisture content for spring corn sowing is 20%-24% for black soil, 18%-21% for alluvial soil, and 15%-18 for sandy soil. %, when the soil moisture content is high, it should be sown after moderate scab; if the soil moisture content is insufficient, use water to sow seeding. The amount of broadcast. According to the seed germination rate, planting density requirements, etc., it is required that the seeding amount be stable and the seeding be uniform. The deviation of the number of seeds per hole in the hole sowing should not exceed the regulation. Single seeding requires one seed per hole, uniform plant spacing, single grain rate ≥ 90%, and porosity less than 5%. The average seeding amount per mu is 3-4 kg, on-demand is 2-3 kg, and precision seeding is 1-1.5 kg. The amount of seed needed for single seeding and 1 seed per hole is calculated as follows. If 2-3 tablets per hole, it needs to be expanded 2-3 times. Deep sowing. Based on soil moisture, texture, and seed size, it is determined that after sowing, the depth of sowing in black soil is generally 3-5 cm, the depth of sowing in albic soil and saline-alkali soil is 3-4 cm, and that in sandy soil is 5-6 cm. Not more than 10 cm. The standard for mechanical operation is that the broadcast depth error should be no more than 1 cm. Crackdown. Compaction after sowing can increase the degree of compaction of the upper layer of the soil, so that the lower layer of water increases, the seeds closely contact the soil, which is conducive to seed germination. Appropriate compaction in dry areas and windy areas is an effective measure to ensure the entire seedlings. The time of repression depends on soil moisture, and the soil moisture around the seed is about 80% of the field water holding capacity (hand clumping, throwing ground to spread, and surface soil repressing when the wind is dry). Fertilizer. Generally, 4-7 kg of compound (mixed) fertilizer or ammonium diammonium phosphate is used (when the spring corn is sown in low temperature, diammonium phosphate can be used as seed fertilizer). The fertilizer should be buried and avoided direct contact with the seed. Ensure that no roots are burned or sprouted at the sides 5-6 cm from the seeds. Urea, ammonium bicarbonate, etc. should not be used as seed fertilizer to avoid burning seed and burning seedlings. In the autumn, sufficient fertilizer can be used without seed fertilizer. other requirements. Seed damage rate is small, broadcast straight, the deviation around the seed is not greater than 4 cm, consistent row spacing, neat land, no rebroadcast, no leakage broadcast. When the joint sowing can complete fertilization, spraying, spraying herbicides and other operations. Our company is mainly engaged in the production of NATURAL PLANT EXTRACT raw materials, and is a famous supplier of plant extract raw materials in China.
The following are our main recommended fruit and vegetable powder.
Fruit Powder,Vegetable Powder,Organic Apple Juice Powder,Sea Buckthorn Powder Shaanxi Kepler Biotech Co.,Ltd , https://www.keplerherb.com
Fruit and vegetable powder is made by processing fresh fruits and vegetables through more than 10 processes, including pretreatment, quick freezing, vacuum drying, ultraviolet sterilization, packaging and storage, through freeze-drying technology and equipment with international advanced level.
The following are our main recommended fruit and vegetable powder. Our company is mainly engaged in the production of natural plant extract raw materials, and is a famous supplier of plant extract raw materials in China.
Fruit and vegetable powder is made by processing fresh fruits and vegetables through more than 10 processes, including pretreatment, quick freezing, vacuum drying, ultraviolet sterilization, packaging and storage, through freeze-drying technology and equipment with international advanced level.
