Recently, many places in the country suffered from heavy rains and heavy rains. Guizhou Province and other konjac planting provinces also suffered from continuous heavy rain. The konjac planting base did not prepare for prevention in advance, and the losses were serious.
According to reports, this konjac is flat and the drainage ditch is too shallow after planting. Therefore, after heavy rain, it is easy to cause a large amount of accumulated water. If the water level cannot be retired in time, it is easy to cause great loss, because the drainage is not smooth, resulting in konjac field stains. Water, konjac roots are blocked by respiration, root rot, yellowing of leaves, etc., and other diseases of konjac.
How should planting konjac prevent disasters and other natural disasters in summer?
1, konjac water damage
The konjac water damage is mainly caused by the loss of topsoil in the field of konjac. If there is a long period of heavy rain, there will be serious soil erosion, and the konjac species will be exposed to the soil surface and even washed away by the water. If it occurs in the early stage of konjac growth, it will cause poor expansion of the konjac petiole, and the leaf color is also weak, and the yield is reduced. Or due to poor drainage, the water in the konjac field is damaged, the respiratory roots of the konjac are blocked, and root rot and yellowing of the leaves appear, which may lead to the occurrence of other diseases of konjac.
Prevention and prevention
1. Raise the soil as soon as possible, and spray 0.5% potassium dihydrogen phosphate on the foliar surface;
2. Ditch the drainage to reduce the groundwater level;
3. If there are other diseases, it is necessary to carry out chemical control. Special emphasis is placed on strengthening the prevention of konjac soft rot. It can be used to prevent soft rot with the combination of konjac and rot.
2, konjac drought
The main damage of Konjac is that the number of rhizome of konjac is less, the bulb growth is hindered and the shape is smaller, the yield is sharply reduced, and the processing quality is decreased, especially the fine powder extraction rate is reduced.
Prevention and prevention
The corn is used in the high-altitude crop intercropping mode; the konjac field irrigation or the field covering grass before the konjac emergence and sealing, the thickness is 5cm. In addition to the protective effect of covering grass, it also has the comprehensive benefits of fattening, weeding, disease prevention and yield increase; the third is to carry out field sprinkler irrigation in the dry season from July to August.
3, konjac freezing damage
In the alpine mountainous area or cold area, the konjac is planted too early, the konjac stays in the ground for wintering or the storage period is not warm and antifreeze work, the bulb is frozen, the water inside the cell freezes, the internal tissue structure is destroyed, and the bulb is brown rot In addition, the planting time is too late, the skin is damaged during the handling process, and the low temperature and rain are encountered. If it is not stored as required after being transported back, it will easily lead to rot symptoms. After the symptoms of freezing damage and decay, the temperature rises, or it is not gas-permeable. White mold grows on the surface of the konjac frozen damage, and the freezing damage has become the first killer to cause diseases such as konjac soft rot in high cold areas.
Prevention and prevention
1. In the high-altitude areas where frost is prone to frost, do not use the ground to store the winter, and use indoor insulation storage;
2. The konjac species to be stored for drying and pretreatment (about 15% moisture loss as a pretreatment standard) and selection, the seed rafts are required to be placed according to the variety, by source, by size, and the disease, rotten, wounded, and strange Seedlings to ensure the quality of stored seeds;
3. Adjust the storage temperature to above 5C; keep the storage room ventilated and ventilated;
4, konjac wind damage
In the event of strong winds or heavy winds and thunderstorms, the konjac has leaf misalignment, konjac stem damage or breakage, especially in the konjac field at the tuyere, which is more prone to wind damage.
Prevention and prevention
When choosing the konjac planting area, try to avoid choosing the field in the ventricle. In case of konjac wind damage, you can spray the Bordeaux mixture after the rain and rain, let it recover naturally, and never artificially raise it, otherwise it will cause human secondary disaster.
5, konjac heat damage
The konjac leaves are caused by physiological obstacles caused by high temperature, and the top end has a dead point or the tip is dry.
Prevention and prevention
Intercropping of konjac with corn and other high-altitude crops; laying grass in the field; applying different concentrations of Bordeaux mixture in different periods. Apply 4-4 Bordeaux mixture from mid-June to mid-July; apply 4-6 Bordeaux mixture from the end of July to August; and apply 6-9 Bordeaux mixture from September to October.
6, konjac grass damage
The main grass damage of konjac is sputum, spicy scorpion, gray scorpion, clover, artemisia, bamboo grass and so on. Konjac grass damage has a greater impact on the production of konjac. If the control of grass damage is not in place, it can cause more than 20% reduction in konjac production.
Prevention and prevention
Chemical control methods and manual weeding methods can be used. Before the emergence of konjac, it can be controlled by using 10% licorice 250 times or 20% gram without tracer 600 times and 30% Feida WP 500 times. After the emergence of the konjac, use the artificial mowing method, do not pull the grass, otherwise it will damage the konjac and aggravate the disease.
All of the diseases and natural disasters encountered during the growth of konjac compiled by Huinong.com should be mainly based on prevention. The remedy after the actual occurrence will cause uncertain losses, so all prevention must be from the source. Start.
romatographic and use double-antibodyromatographic and use double-antibodysandwich method to detect antigen. Whenthe concentration of antigen in specimen ishigher than the minimum detection limit, theviral antigen will form complexes withlabeled antibodies first. Under chromatogra-phy, the complexes move forward along thenitrocellulose membrane till captured bypre-coated monoclonal antibody ofindetection zone.Through the visible color tointerprete the test results.
Antigen Test Kit,Disposable viral antigen detection kit,Antigen antibody test kit,Disposable virus sampling tube
Jiangsu iiLO Biotechnology Co., Ltd. , https://www.iilogene.com