-
Key Points of Cotton Chemical Topping and Detailed Explanation of Application Methods
Cotton chemical topping is the use of chemical regulation measures to shape cotton into an ideal plant architecture and create a high-photosynthetic-efficiency population. 1. Status and role of chemical topping. Cotton is a typical light-loving crop. High yield, early maturity and high quality in the early-maturing cotton region of eastern Hebei need to be achieved through rational close planting, but rational close planting will inevitably intensify the contradiction between individual plants and the population in terms of space and light energy utilization in the middle and late stages. Therefore, cotton chemical topping has become an important supporting measure for rational close planting, and is also the core content of early promotion and stress resistance, especially the simplified cultivation technology system. At present, mepiquat chloride in cotton chemical topping
-
What to Do About Excessive Cotton Growth Regulator Application? Master These Mitigation Methods
Every year in late July and early August, many cotton farmers in cotton-growing areas report that some cotton plants showed excessive vigor in the earlier stage, and some even tended toward runaway growth, so they applied the plant growth regulator mepiquat chloride. Because they could not get the concentration right, when the spray concentration was too high and they encountered high-temperature weather, the cotton plants showed symptoms of leaves and branches being unable to spread out, and cotton growth was inhibited. Below are several methods to alleviate excessive cotton growth: Spray Huimanfeng active liquid fertilizer. This fertilizer contains chelated humates and multi-element compound fertilizer
-
The function and application method of the automatic mounting-cluster agent for ripe silkworms
(1) Brief introduction "Automatic mounting-cluster agent for ripe silkworms" is a new type of silkworm medicine that promotes uniform maturity of silkworms and automatic mounting of ripe silkworms onto clusters; at the same time, unripe silkworms, diseased silkworms and weak silkworms do not climb onto the clusters, improving cocoon quality and reducing the rate of inferior cocoons. (2) Advanced nature of the technology "Automatic mounting-cluster agent for ripe silkworms" passed appraisal organized by the Guangdong Provincial Higher Education Bureau in 1993, and experts unanimously considered that the result reached the domestic leading level. In China, molting hormone is used to make silkworms mature uniformly; when they are ripe, they are picked up one by one by hand and placed on clusters, or unripe and ripe silkworms are picked up together with both hands and placed on clusters.
-
Detailed Explanation of the Application Methods of Tea Seed Cake in Aquaculture
Tea seed cake contains tea saponin with hemolytic action, 11%-16% crude protein, 5%-7% fat, 40% digestible sugar, 11% nitrogen, 0.37% phosphoric acid, 1.23% potassium, and various amino acids essential for animals and other nutrients, and it has a wide range of applications in aquaculture. ① Pond treatment and water fertilization. Tea seed cake is the preferred pond-clearing agent for ponds with mixed culture of fish, shrimp and crabs. The pond treatment method is: in a pond with a water depth of 30-50cm, use 25kg/hm3 of crushed tea seed cake; for a pond with a water depth of 1m, it can be increased to 50k
-
Rational Application Methods and Key Points for Using Allicin
Although allicin has very good effects, it must still be used rationally, and the dosage must not be blindly increased, so as to avoid waste or even adverse effects. Huang Xingguo et al. conducted a preliminary study on the application effect of allicin in rice field eel farming, and the results found that due to different doses of allicin added at different feeding stages, the survival rate and disease prevention and control effects differed: in the feeding stage without added allicin, after 1 month of feeding, the survival rate was 89%, and the main causes of death were red-skin disease and enteritis; when 200mg/kg and 40
-
The role and application method of spraying paclobutrazol on rice
Paclobutrazol is a highly active plant growth retardant and broad-spectrum fungicide. Its internationally used code is pp333, and the code for the product made in China is MET. Its physiological effects on rice are mainly dwarfing, promoting tillering and improving stress resistance. Moreover, after transplanting, the seedlings turn green quickly, tiller early, the number of effective panicles increases, and the seed-setting rate and 1000-grain weight increase. It is a simple, easy and effective measure to increase yield. Experiments in various places in Liaoning in recent years have found that rice seedlings sprayed with paclobutrazol show the following changes compared with the control: 1. The seedlings become shorter. Spraying at the rice seedling stage
-
Reasonable Application Methods of Allicin Feed Additives
Allicin has the effect of improving the growth environment of livestock and poultry. The volatile sulfur-containing compounds in allicin can not only give off a special garlic odor to drive away mosquitoes, flies and insects from biting and sucking feed or manure, but also, under the action of enzymes in the bodies of livestock and poultry, be converted into allicin and excreted from the body to prevent mosquitoes and flies from breeding and growing in manure and urine, thereby improving the surrounding environment. Allicin has an anti-disease effect on livestock and poultry. Allicin can effectively kill various pathogenic bacteria such as Shigella dysenteriae, Pasteurella, Salmonella enteritidis, and Pseudomonas aeruginosa, and has the functions of enhancing resistance to viral diseases, and replacing
-
Application Methods of Fertilizer Long in Formula Fertilization for Rice
1. Advantages of Fertilizer Long: (1) Long-acting and synergistic effect, extending the fertilizer efficiency period of nitrogen fertilizer by 1 time, with no fertilizer deficiency phenomenon throughout the entire growth period of rice. (2) Improved nitrogen fertilizer utilization rate; deep fertilization overcomes fertilizer loss due to running, overflowing and seepage of field water, reducing fertilizer loss. (3) Enhanced resistance of rice to low temperature, drought and disease erosion. (4) Changes traditional multiple surface fertilization to deep one-time fertilization, saving fertilization labor and costs. (5) Reduced nitrogen fertilizer dosage; according to plots with different fertility, the pure nutrient amount of nitrogen fertilizer can be reduced by 15%-25%. 2. Fertilizer Long
-
Application method of simple temporary holding facilities for fish
At present, there are quite a few flow-through aquaculture farms in Sichuan, mainly culturing cold-water fish species, and most of their culture facilities use concrete ponds. During the earthquake, these concrete ponds were damaged to varying degrees by the destructive force of the earthquake, which may cause pond leakage and so on. If they are not repaired in time, the water in the ponds may be lost, creating a crisis for the survival of the cultured aquatic organisms, and even causing all the water in the ponds to run out, resulting in the death of the cultured aquatic organisms and bringing huge economic losses to the farmers. If
-
Trace elements needed for soybean growth and application methods
Normal soybean growth requires some trace elements, among which the more important ones are molybdenum, boron, zinc, manganese, etc. Molybdenum is a component of soybean root nodule nitrogenase and an indispensable component for the normal life activities of nitrogen-fixing bacteria. Boron is also very important in soybean life activities. Soybeans deficient in boron have poor root development and poor nodule formation, losing their nitrogen-fixing ability. Therefore, attention must also be paid to trace elements. Can the trace elements needed by soybeans be satisfied from the soil? This depends on the abundance or deficiency of trace elements in the soil and environmental conditions. For example, in low-lying or poorly drained
条件筛选