The black potato pulp has a starch content of 13-15%, good taste and excellent quality. Black potatoes are a relatively high-yielding crop, and rational fertilization can make black potatoes more productive. How to fertilize black potato planting? Here is a brief introduction to the fertilization method of black potatoes.
1, select the fine species
The selection of good varieties is an important part of high-yield cultivation of black potatoes. At present, black diamond seed potatoes are mainly used in production. The color of this variety is purple-black, no obvious flesh and white, and the domestic vegetable market is optimistic.
2, land preparation and land preparation
Black diamond potatoes are crops that are not resistant to continuous cropping. The plots of black diamond potatoes should be selected for plots of black diamonds and other Solanaceae crops within three years. Black potatoes are very sensitive to continuous cropping and must be avoided in production. If black potatoes are continuously planted on a piece of land, it will not only cause serious diseases, such as bacterial wilt, but also cause soil nutrient imbalance, especially some trace elements, which make the black potatoes grow poorly, the plants are short, the yield is low, and the quality is poor. Black potatoes and rice, corn, wheat, barley and other plants have better yield-increasing effects.
Black potato tubers need to loosen fertile soil. Therefore, it is best to choose a plot of black potato to be flat, with irrigation conditions, and well drained, deep ploughed, loose and weakly acidic sandy loam. After the harvest, it is necessary to carry out deep cultivation and then smash. The width and height of the cockroaches depend on the topography and soil moisture. The terrain is high and the drainage is good, the land is low, and the poor drainage is narrow or high.
3 base fertilizer.
Mainly organic fertilizers, such as horse manure, manure and so on. After being applied to the soil, the fertilizer effect can be continuously exerted to meet the nutrient demand of the black potato in each growth period. Manure must be a fully decomposed high-quality fertilizer, which is suitable for 37,500 kilograms per hectare. When applied, 2/3 of the base fertilizer can be applied to the soil, and the rest is applied as a seed fertilizer at the time of sowing. Soil with poorly viscous drainage, combined with a large amount of furnace ash and slag when applying organic fertilizer, has good effects on loose soil, high ground temperature and increased yield.
4, timely seeding
An important condition for determining the timing of black potato sowing is the temperature during the growth period. In principle, the black potato must be frozen at a daily average temperature of 15-25 °C. The longer the period for the continuous growth of the tuber, the higher the total weight. Most of them are planted after late rice or mid-season. Autumn potatoes are sown from late September to late October, and winter potatoes are suitable for sowing from late December to mid-January.
5, reasonable close planting
The yield factor constituting black potatoes is the product of the number of plants per unit area and the yield per plant. The yield per plant is determined by the number of individual potato and the weight of single potato. There is a contradiction between the increase in population and the increase in yield per plant. When the number of plants per unit area increases, the yield per plant decreases accordingly, and both have a certain dependence on planting density. Within a certain range of density, the yield of the population increases with increasing density; the yield per plant decreases with increasing density. Therefore, the determination of density must consider the contradiction between the two factors of population production and individual production.
If the density is small, although the individual plants are well developed and the yield is high, the total number of plants per unit area is small, the number of potatoes is small, and the yield is not high. If the density is too large, although the total number of plants is large, the weight of the single potato is very low, and the yield is not high. Therefore, rational close planting is to make a reasonable group structure within the unit area, which can not only make the individual develop well, but also play a role in increasing the production of the group, so as to make full use of light energy and ground power to obtain high yield. Considering the coordinated development of the group and the individual, black potatoes are about 5000 seeds per mu under the general cultivation level, and 2-3 stems per plant are more suitable.
6 top dressing
Black potatoes have a longer time from sowing to emergence. After emergence, it is necessary to use fresh manure water and a small amount of nitrogen fertilizer to apply sprouting fertilizer to promote the rapid growth of seedlings. In the bud stage, combined with the cultivation of soil, a potato fertilizer is applied, with potassium fertilizer as the main factor, combined with nitrogen fertilizer, and the amount of fertilizer depends on the growth of the plant. After flowering, it is generally no longer fertilized. If the phenomenon of de-fertilization and premature aging is manifested in the later stage, foliar application can be carried out with phosphorus or potassium combined with trace elements.
7 Prevention of pests and diseases
Black potatoes are more ill, and common diseases include viral diseases, late blight, bacterial wilt, ring rot, scab, and cancer. Late blight usually occurs before and after the rain and the flowering period of the plant. Therefore, it is necessary to pay attention to early prevention and treatment with Bordeaux mixture or Phytophthora. Bacterial wilt is currently difficult to control, and the control methods are mainly controlled by reasonable rotation, selection of resistant varieties and seeding with small whole potatoes. Black potato pests mainly include ladybugs, soilworms, mites, crickets, crickets, etc., which can be controlled by means of pesticides or artificial killing.
8 harvest
Black potatoes When the growth of the plants stops, the stems and leaves are mostly yellow, the tubers are easily separated from the stolons, the pericarp is hardened, the specific gravity is increased, and the dry matter content reaches the maximum limit, which is the optimum harvest period for edible tubers. Harvest 5-7 days in advance to reduce the adverse effects of high temperature during the late growth period and improve seed quality.
This article URL: Fertilization time and fertilization techniques for black potatoes
We have Organic Hemp Protein Herbal extract - Plant Extract : Organic extract ; Fruit & vegetable powder ; plant Essential Oil
Now we have 3 GMP standard workshop, Meanwhile, the factory is equipped with the researching and quality inspection centre, with strong technology research and development strength. We also have 3 salesdepartments over 30 people and sell our products all over the world.
For customer`s needs, OEM service is also acceptable. If you have a good idea in new product production but lack of laboratory device and human resource, we are glad to solve this problem for you. Sincerely hope to strengthen exchanges and cooperation with friends from both home and abroad.
Amino acid,Nutrition Supplements,Food Supplement,Food peptide
Xi'an Henrikang Biotech Co.,Ltd , https://www.xianhenrikang.com