How to manage high-yield purple sweet potato, purple potato control Wang products how to apply?
Purple potato control is the key factor in determining the high yield of purple sweet potato, but many farmers' friends are still not familiar with purple potato control. Organic Intermediates N-Hydroxy Succinimide,Pharmaceutical Intermediates 2 3-Dichloroaniline,Trifluoromethanesulfonic Anhydride,3-Chloroaniline Colorless Liquid Shandong YingLang Chemical Co.,Ltd , https://www.sdylhgtrade.com
I. Several misunderstandings of purple potato control Wang:
1, only pay attention to costs, do not pay attention to benefits.
2. The effect of controlling Wang only depends on the above ground section, not the underground section.
3, only the pursuit of production, ignore the product rate and quality.
4. It is not understood that the large number of applications of paclobutrazol is also an important reason for the prolonged growth of purple sweet potato and the decline in yield (compensated growth principle).
5. It is not known that most of the paclobutrazol absorbed by the leaves is trapped in the absorption part and is rarely transported outside. It is leached into the ground with rainwater.
In the eyes of many people, purple potato control is the use of paclobutrazol, chlormequat, ethephon and other regulators to control the purple sweet potato stems and leaves no longer prosperous, that as long as the stems and leaves no longer prosperous will make purple sweet potato obtain high yield. This traditional mode of control, blindly pursue the surface effect of purple potato control Wang, in order to control the prosperous, arbitrarily increase the dose, while ignoring the real purpose of purple potato control Wang - increase production, high quality.
In fact, any simple control of Wang will not achieve the desired results, such as paclobutrazol, uniconazole, chlormequat, dildoamine, ethephon, and even herbicides. The prosperous control is too light to control; if the control is heavy, it will lead to a reduction in production, and the potato block will be deformed. There will be no commercial value and serious residue. As a result, a large amount of money and energy was wasted without obtaining the expected returns. This is the real challenge facing Purple Potato.
Second, purple potato control basis
A. The basis for the first time control of Wangwang is based on the growth of roots and stem vines in order to form their own physiological structure and create more nutrient sources for the expansion of tubers, which is to lay the physiological foundation for reproductive growth. It is an important physiological process that must be experienced during the growth of purple sweet potato. However, because of environmental or management conditions, purple sweet potato easily deviates from the normal growth process and appears prosperous, thus consuming large amounts of nutrients. At this time, it is the stage of formation and differentiation of purple sweet potato chips, and it is easy to obtain insufficient nutrients. Affecting the formation and growth of tubers, resulting in the occurrence of tubers during the formation of tubers or the phenomenon of no tubers, the purple tuber also missed the first expansion of purple sweet potato, and caused a great impact on the output of purple potatoes.
The degree of intensive control was lighter. The purpose was to promote the growth of roots, increase the number of tubers, and make the vines grow in a robust direction.
B. The second control of Wang is based on that the purple sweet potato is about to enter the second expansion period. At this time, it is still in the season of high temperature and high humidity. The leaf area coefficient of purple sweet potato has reached the peak, and the growth potential of large stem vines is still strong. At this time, it is purple. During the second expansion phase of the potato preparation, purple potato was controlling the time. From the summer heat (August 23) to Bailu (September 8) is the golden age of the purple sweet potato.
This time, we must re-control, the purple potato stems and leaves are still in a vigorous growth stage, the purpose of controlling Wang is to control the growth of stems and leaves, reduce nutrient consumption, to prepare for the second expansion of purple sweet potato.
C. discretionary control of the number of times according to the number of spring potato planting about 70 days after the planting, the north began to enter the "rainy season", under high temperature and high humidity conditions, the root tuber of purple sweet potato expansion is slow, or even stop (ground temperature is higher than 30 degrees), resulting in purple potato vine Growing too busy. A large population of stems and leaves will form, and vegetative growth and reproductive growth will lose balance. Most of the nutrients in the soil are consumed by the vegetative growth of the stems and leaves, resulting in a poor stem and leaf distribution system. Late stem and leaf decline, photosynthesis decline, and ultimately lead to reduced production.
At this time, if there is heavy rain in the season, the growth will be overwhelming and it is necessary to control it again. This period of purple potato ridicule period just ended, is the sweet potato nutrition stage, the main nutrients for the growth of stems and leaves, is the strongest growth potential of purple potatoes, the largest amount of daily growth, so we must re-control. On the contrary, it should be lightly controlled or not controlled.
Third, the concept of purple potato control Wang We are now planting sweet potatoes, no longer in order to "eat" and blindly pursue high yield, we must turn purple sweet potato into high value-added goods, that is, to use a market perspective to view "high yield" . Therefore, we can not ignore the appearance, quality, taste, even green, no residue and so on of purple sweet potato. Only by adapting to the market can we achieve the sustainable development of the purple potato industry.
Scientific purple potato control is from the perspective of plant physiology, through the external role or the use of plant growth regulators, affecting the endogenous regulatory system of plants, on the basis of gene expression from the initial stage of the "directional induction" of plant growth and development. In the whole growth period, the system engineering that promotes the harmonization of crops and environment, individuals and groups, vegetative growth and reproductive growth, roots and shoots, plant external morphology and internal physiological functions. In this process, the root differentiation of sweet potato, the formation of tubers, photosynthetic rate, "source", "flow", "garage", nutrient accumulation, nutrient transport, starch accumulation, potato appearance, presence or absence of residues and other factors must be involved. .