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Which principles should be followed in the selection of cotton varieties?
Scientific seed selection is the first pass of cotton production. The selection of fine varieties should follow the following three principles: first, the principle of examination and approval. The state stipulates that the varieties must be approved by the national or provincial variety approval committee before they can be used in production, so it is necessary to purchase the approved varieties as species for production. The second is the principle of ecological zone. The selected varieties should be suitable for the ecological conditions of this cotton area. The third is the principle of familiarity. Because the maturity of varieties has special requirements on sowing season and ecological region, varieties with different maturity can not be sown in the wrong season.
2019-01-16 -
Configuration elements and principles of plant landscaping
As people have higher and higher requirements for the living environment, plants occupy an important position in the environment. Plant landscaping refers to the shape, color and line of a plant community or individual plant by means of artificial design, planting, maintenance, etc.
2018-09-05 -
Four principles of Orchid Investment
Four principles of Orchid Investment
2018-04-07 -
Principles of food selection: what are the general principles of food selection and purchase?
The so-called food rich in the season is the most suitable for planting and mature ingredients in the current season. The ingredients in accordance with the natural law are not only fresh, good taste and high nutritional value, but also have a high ability to prevent insect pests in the current season. So, you don't have to apply a lot of fertilizer and spray.
2019-01-07 Food selection and purchase principle general original what are the so-called -
Rural environmental governance should be "protection priority"
In recent years, environmental pollution and destruction have become more and more serious, and the contradiction between environmental protection and economic development has become increasingly acute. Environmental problems are no longer a regional problem, but a problem restricting the economic development of the whole country. Ask about all kinds of environments.
2016-01-10 rural areas environment governance justice "protection first " in recent years -
Planning principles of Leisure Agriculture
Planning principles of Leisure Agriculture
2018-07-06 -
Principles and methods of fertilization with water-soluble fertilizer
Principles and methods of fertilization with water-soluble fertilizer
2019-07-31 -
The principle of protecting flowers in house how to preserve potted flowers
The principle of protecting flowers in house how to preserve potted flowers
2019-03-03 -
Principles to be followed in bonsai design
Some people say that the aesthetic characteristics of Chinese bonsai art are elegant and free from vulgarity, implicit and artistic conception, the combination of reality and reality, and the level and depth of field, so as to change from finite to infinite, from bounded to unbounded, fascinating, reverie, and so on. But if summed up more succinctly,
2019-05-23 -
What are the principles of fengshui arrangement of plants in the living room
What are the principles of fengshui arrangement of plants in the living room
2019-03-09 -
The principle of killing poisonous fish
It is a kind of insecticide to control pests and mites such as Lepidoptera, Homoptera, Hemiptera, Diptera and Coleoptera, but some people use it to poison fish. What is the principle of killing poisonous fish? How to use it to control insect pests? First, wipe out the original poisonous fish
2020-11-11 Anti-sweep poison fish principle anti-sweep benefit yes a kind of prevention and control. -
The basic principle of Pig raising Technology in fermentation bed
The basic principle of Pig raising Technology in fermentation bed
2018-07-25 -
The benefit of mutton is good, but raising sheep should be cautious. The basic principle of fattening winter meat sheep
The benefit of mutton is good, but raising sheep should be cautious. The basic principle of fattening winter meat sheep
2018-07-11 -
Principles of landscape plant planting
Landscape plants occupy a very important position in landscape design, and the configuration of plants affects the quality and function of the landscape. What is the principle of landscape plant planting? Landscape plant planting principles 1. Gardens in line with the nature and functional requirements of green space
2020-11-08 Landscape plants planting principles Landscape Design -
Principles of fattening mutton sheep in winter
Principle of fattening groups all male and female lambs that are not used for breeding and old, weak, thin and remnant sheep that are eliminated can be used for fattening. First, they are castrated, dewormed, ringworm killed and hoof trimmed, and then grouped and grouped according to old and young, strong and weak, male and female. In this way, it will benefit
2020-11-08 Breeding mutton sheep winter fattening principle one -
What are the principles of plant placement? the principle of plant placement of fengshui in the kitchen
The kitchen is generally a place with a heavier smell of oil fumes in the air at home, and if Wuhan decoration owners put some suitable plants in the kitchen can beautify the environment and purify the air, it is also beneficial to the health of the occupants, and can be changed to their own fleeting years. By
2019-06-25 -
Don't ignore these three principles of growing flowers in autumn. Get rid of yellow leaves, rotten roots and fallen flowers easily.
In recent days, after a baptism of torrential rain, the weather has gradually become cooler, which means that summer is over. At this time, it is also the best growing season for potted flowers. No matter what kind of flowers, they are always born in spring and autumn.
2018-08-20 -
Three Principles of Fertilization in Autumn Orchard
Three Principles of Fertilization in Autumn Orchard
2019-10-26 -
Principles of pest prevention
Principles of pest prevention
2018-05-04 -
Design principles of Ecological Agricultural sightseeing Park
Design principles of Ecological Agricultural sightseeing Park
2019-02-19