Anthocyanidins is a kind of water-soluble natural pigments widely existing in plants in nature. They are colored aglycone obtained from the hydrolysis of anthocyanins. Most of the main colorants in fruits, vegetables and flowers are related to them. Under the condition of different PH value of plant cell vacuoles, anthocyanidins make the petals colorful. The main functions about anthocyanidins are antioxidant and free radical scavenging function, nutritional fortifier in food and natural pigment.
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Sowing cotton density first
The appropriate density of cotton not only relates to whether the individuals and groups of cotton can develop in a coordinated and balanced manner, but also relates to the adaptation to different climates. Therefore, this is one of the key measures for the high yield and stable production of cotton. It is necessary to design well before sowing so as to actively manage cotton throughout the year. Through multi-year and multi-site, multi-point surveys, it has been found that the northern cotton area is the easiest to achieve high and stable cotton production density of 2500 to 3000 plants per mu. According to the number of high-quality bells per knot (at least 24 per ring of cotton seed) from 18 to 22, the number of high-quality bells is between 50,000 and 55,000. It can ensure that the cotton yield per mu is stable at 275-300 kg. According to the theoretical calculation, the large row spacing is 90 centimeters, the small row spacing is 50 centimeters (the average row spacing is 70 centimeters), the spacing between the rows is 33.3 centimeters, and the density is 2860 strains. So it is generally medium-sized and can be designed in this way. If the land is too strong or too weak, this density range can be broken. Strongly, the number of bolls per plant is large, and seedlings can be kept as low as possible. In weak lands, the number of bolls per plant is small, and it is necessary to keep more seedlings, increase the population, and not reduce the number of mubells. So the specific density of each household and each cotton field should be different. When planting, every land should be adjusted, the space should be widened appropriately, and the line spacing should be appropriately narrowed in the weak areas so as to achieve the best adaptability of density and soil strength. There are currently two non-mainstream tendencies regarding density in cotton production. A tendency to sparse. Emphasizing good varieties and strong grounds, the density was set between 2000 and 2200 strains. This kind of density can hardly produce high yields in cold or dry years. If there are only 2,000 strains, it is necessary to require more than 25 high-quality bells per plant to achieve the minimum requirement of 50,000 tons of mu, which is difficult to achieve. Some people are afraid that increasing the density will cause the cotton plant to prosper. This can be controlled by diaminos. Another tendency is to plant densely. Emphasizing the weak ground, the cotton trees could not grow up. The row spacing was reduced to about 60 cm, and the plant spacing was reduced to about 20 cm, with more than 5,000 plants per mu. Such as Hebei Qiu County, Wei County, a lot of cotton fields. Under such circumstances, both the ground and the underground environment of the cotton plant are overcrowded, it is difficult to realize the individual production potential, and eventually it is difficult to produce high yields. The above suitable density is relatively speaking, can only be said to be more suitable to the current cotton production conditions and management level of most of the cotton fields in the North, to achieve a higher probability of high production and stable production; other management techniques also have an impact on production, should be: "Sparse Diluted pipe, dense plant dense pipe." With the mastery of chemical control technology, there is room for the appropriate density. In 2010, Wang Chonghe, the first farmer of multi-prosperity farms in Guoxin, has an average row spacing of 71.5 cm, a plant spacing of 30.1 cm, 3097 plants per mu, 18.0 average high-quality bells per plant, 55746 high-quality bells, and an average of 380 mu. Mutual production of 310.1 kilograms of cotton (water content is only 9%).