Seedling management measures
Growth and development characteristics: From the stage of emergence and jointing, corn is the seedling stage. This period is centered on vegetative growth, the above ground growth is relatively slow, and the root growth is rapid.
The main objective of field management is to promote root growth, ensure seedlings, seedlings, and seedlings, and lay a foundation for high yields.
Production Management Technology:
1. Seedlings and Dingmiao. Sites that do not use single-on-demand plants require time and seedlings after emergence to ensure seedling growth. 5-6 leaf visible Dingmiao, it is best not a one-time Dingmiao, so as to avoid the lack of seedlings due to plant diseases and insect pests or other disasters. When seedlings are seedlings, leave sufficient seedlings according to their characteristics and requirements, remove weak seedlings, diseased seedlings, insect seedlings, and deformed seedlings, and retain strong seedlings, uniform seedlings, and Qimiao seedlings. If the seedlings are missing, they can stay in the nearest place in the same line with their neighbors or their neighbors. Try not to transplant the seedlings and plants; if there is a shortage of seedlings or where the entire line is broken, the seedlings will need to be filled.
2. Top dressing Miao Fei. When no seedlings are applied at the time of sowing, seedlings may be topped with seedlings. The role of seedling fertilizer is mainly to promote the growth of seedlings, especially roots, and is essential for the cultivation of strong seedlings and high yields. Seedlings are generally applied after ditching to avoid surface spraying without any effective rainfall. The amount of fertilizer can be determined according to the specific conditions such as soil fertility, yield level, fertilizer nutrient content, etc. If no fertilizer is added in the later period, a certain percentage of long-term urea or slow-release urea can be allocated.
3. Moisture management. Maize seedlings have little water requirement and can tolerate mild drought stress. Moderate drought at the seedling stage promotes root development and facilitates seedling emergence. Therefore, when the soil is sowed well before sowing, or after sowing, it will be poured over the land of Mengmeng water. Generally, it is not necessary to supplement irrigation at the seedling stage.
4. Pest control. The field disease at the seedling stage is dominated by root rot, brown spot and rough dwarf disease at the seedling stage, and common bacterial diseases occur in rainy years. Root rot in seedling stage can significantly reduce the incidence rate by planting resistant varieties or seed coating, but can only reduce the occurrence of diseases through the rooting of pesticides at the seedling stage, and the cost is higher; the dwindling disease can be adjusted by sowing date or seed package. Clothing control, once the seedling stage has no effective rescue measures; brown spot can be sprayed on the foliage at the beginning of the disease to control its spread. Insect pests are dominated by underground pests and sucking pests. Some species of sucking pests can spread many viruses and cause viral diseases. The earlier the disease, the greater the loss of production. The seedling stage is also an important period for the weeds to germinate.
Maize plants are young at the seedling stage, with undeveloped root systems and weak ability to resist diseases and insect pests. At this time, plants are subject to pest and disease infestation, which easily results in weak seedlings or dead seedlings. Therefore, the main pest control measures at this stage are prevention and cure of field weeds, prevention and control of underground pests to protect seedlings, and spray insecticide and anti-poisoning.
Spike management measures
Growth and development characteristics: From the jointing stage to the tasseling stage, corn is the stage of the ear. The growth and development of this period is characterized by vigorous growth of vegetative organs, rapid growth of shoot stalks and leaves and underground secondary roots, simultaneous differentiation and formation of tassels and ears, and the shift from simple vegetative growth to vegetative and reproductive growth. Go ahead. The ear period is the most vigorous growth period of corn life, and it is also an important period of field management in corn.
The main objective of field management is to promote stalk prosperous growth, ensure that plant vegetative growth is robust, the roots are deep and leafy, the ear development is good, and strive to spike, grain and more.
Production Management Technology:
1. Topdressing panicle fertilizer. When entering the heading stage, the plant grows vigorously, and the absorption of mineral nutrients is the most and the absorption intensity is the greatest. It is an important period for absorbing nutrients in the corn life, and it is also a critical period for fertilization. The application of nitrogenous fertilizer at the big bellmouth stage can effectively promote the differentiation of the florets in the ear and realize the large spikes and grains. The heading stage is mainly applied nitrogen fertilizer. The amount of topdressing can be determined according to land force, seedlings, etc. In the row side ditch deep application or in the vicinity of the plant points, such as the ground surface must be combined with irrigation or effective rainfall to prevent loss of fertilizer. Wherever possible, small cultivators can be used for fertilizing.
2. Irrigation. At the time of earing, the water requirement of maize plants increased. Drought would reduce the number of effective filaments and grains in the ear, and it would also cause difficulty in the male tassels. During the earing period, attention should be paid to possible drought conditions, and flexible irrigation based on weather conditions and soil moisture.
Freeze-dried Half Of Vegetables
Freeze-dried Vegetables into powder will not affect its nutrition. Normally heat-sensitive substances are lost at high temperatures. For example: traditional high temperature drying technology. Freeze-drying technology and sun drying, drying, spray drying and so on are drying technologies, different drying methods have different effects on the quality of products. Freeze-drying method has less damage to the product. The traditional drying method is above 0℃, while the freeze-drying technology is simply understood to sublimate the moisture of fresh food under the vacuum and low temperature environment, and retain its original nutritional composition, appearance, size and other biological characteristics.
Freeze-Dried Half Of Vegetables,Freeze Dried Spinach,Freeze Dried Carrot Powder,Organic Purple Potato Powder
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