-
Sexual propagation proves effective for gastrodia cultivation
Gastrodia is a flagship product among the traditional Chinese medicinal herbs of our province. As the quality of gastrodia cultivation degrades year by year and diseases become severe, gastrodia yields are low and returns are poor. How to solve this problem? Experts at the Fengcheng City Yulong Sexual Seed Propagation Demonstration Service Base have found a way: with the method of sexual propagation of gastrodia, not only do yields increase by 2-3 times compared with asexually propagated gastrodia, but the disease resistance of gastrodia is also greatly enhanced. What is sexual propagation of gastrodia? According to Mo Bingyao, an expert at the Fengcheng City Yulong Sexual Seed Propagation Demonstration Service Base, gastrodia cultivation in our province basically all uses
-
Effective prevention and treatment methods for reproductive stress in breeding sows
1. Symptoms: (1) Abnormal bone metabolism, weak limbs and hooves, abnormal limb morphology and gait. Soft feet, hoof cracks, hemorrhage under the hoof shell, and in severe cases postpartum paralysis. (2) Sows show reproductive disorders, especially first-litter sows, with delayed estrus, anestrus or failure to come into estrus. More piglets born in the first litter, fewer in the second; or more in one litter and fewer in the next. Sows have weak disease resistance, reduced immune function, incomplete uterine involution, increased incidence of endometritis and mastitis, and are prone to various infections, with a higher culling rate. (3) Sow fertility and pig
-
Tea plants are prone to banjhi (dormant buds) after autumn, so effective prevention and control are very important
Banjhi in tea plants refers to the phenomenon where tea buds are slow to grow, or bud break is delayed with a low sprouting rate and the new shoots produced are rather small. When tea plants are in the banjhi state, it is extremely favorable for flower bud differentiation, causing the tea plants to produce a large number of tea flowers from late October to mid-November, which consumes a great deal of nutrients, directly affects the growth of tea leaves the following year, and accelerates the aging of the plant. Therefore, preventing banjhi in tea plants is very important. To prevent banjhi in tea plants, the tea garden soil should be fully tilled 3-5cm deep in summer and autumn, so as to cut the soil capillaries and
-
What effects does waterlogging damage have on the growth and development of tea plants?
Tea plants require moist air conditions, but they are not tolerant of excessively wet soil. When there is too much soil moisture or even standing water on the ground, the respiration of the root system is impeded, and its ability to absorb water and nutrients is reduced, seriously affecting the growth of buds and leaves and lowering the yield and quality of fresh leaves. In severe cases, the roots suffocate, anaerobic microorganisms become active, and organic acids are produced that poison the tea plant roots, causing peeling, necrosis and rot. The manifestations of tea plants suffering from waterlogging damage are: few absorbing roots, short and small lateral roots, a shallow root layer, and some lateral roots extending horizontally rather than downward, or even growing upward. Severely affected
-
A Detailed Explanation of the Effects of Low-Temperature Cold Damage on Rice and Defensive Measures
Rice cold damage refers to the disaster in which rice is affected by low temperatures below the minimum critical temperature for growth, resulting in the inability of rice to grow and develop normally and thus causing reduced yields. Depending on the period of damage, it can be divided into delayed-type cold damage, sterility-type cold damage, and mixed-type cold damage. I. Types and Characteristics of Rice Cold Damage 1. Delayed-type cold damage: During the vegetative growth period of rice, and sometimes also during the reproductive growth period, the plant is harmed by relatively low temperatures over a longer period, which weakens the physiological activity of the rice plant, delays its development, postpones heading and flowering, and prevents full grain filling and
-
Effective control methods for leaf beetle pests on licorice
The main species of leaf beetles harming licorice include Diorhabda tarsalis, Pynrrhalta aenescens, Monolepta quadrigutdata, Diorhabda rybakowi, Ceytra sp., Colasposoma dauricum, Coptoc
-
How to effectively prevent and control contaminating fungi in Gastrodia elata cultivation
1. When cultivating fungal wood, carefully inspect the fungal branches and fungal logs. Contaminating fungi prefer saprophytic life, so fresh wood that is not decayed and free of mold should be selected for cultivating fungal logs, and the cultivation time should be shortened as much as possible. If contaminating fungi are found on the fungal logs, scrape them off if the infection is light and sun-dry for 1-2 days; discard them if the infection is severe. 2. Inspect the Gastrodia elata seeds used. If mold infection is found, scrape it off and sun-dry if the infection is light, or disinfect the affected area locally with 75% alcohol, carbendazim, etc. before use. Any Gastrodia elata seeds that are bruised or rotten must be discarded. 3. The filling material must be packed firmly, and never leave
-
What are the effective control methods for the black scarab beetle?
The black scarab beetle is known locally as "tiewoyang" (iron nest seedling). In Wuhe Township, Tengchong County, it is one of the main pests harming crops, with particularly severe damage to sugarcane and dry-raised rice seedlings. It mainly bites the stem base of sugarcane seedlings and rice seedlings, causing the entire plant to die and having a huge impact on sugarcane and rice. The insect's living habits are: during the day it burrows into the soil to rest, and in the evening and at night it comes out to be active, mostly causing clustered damage with a fierce onset, and the harm to sugarcane and dry-raised seedlings is quite serious. For control, the first method is to use irrigation water to make the scarab beetles float to the surface of the water for manual
-
How to kill scarab beetles? Five effective control methods
The larvae of scarab beetles, commonly known as chicken-manure grubs, gnaw at the roots of seedlings. Besides biting through lateral roots and the main root, they can also strip and devour the root bark completely, causing missing seedlings and broken rows, and in severe cases even disastrous damage. Adult scarab beetles feed on both leaves and flowers, and they reproduce extremely quickly, so they can easily harm seedlings. They are a common major pest in forestry. The period when adults cause rampant damage is roughly from June to October, and this is the best time for control: it both controls the damage caused by adults and keeps the next generation's population density in check, yielding twice the result with half the effort.
-
What effect does low winter temperature have on Gastrodia elata
The tubers of Gastrodia elata are buried underground and overwinter in a dormant state; the stable low temperature they can tolerate is 0-5°C. However, if winter temperatures fluctuate frequently, with large swings in temperature difference, sudden warmth followed by sudden cold, Gastrodia elata is prone to cold damage. Therefore, special attention should be paid to cold protection and heat preservation for overwintering Gastrodia elata, especially for box-cultivated Gastrodia elata, which should be covered even more carefully to preserve warmth and prevent cold damage. But Gastrodia elata has a certain low-temperature cycle and requires an appropriate stable low temperature in winter, otherwise its sprouting will be adversely affected.
条件筛选