1. Change the late broadcast to the wheat field and the live broadcast
The lack of light resources is the limiting factor for the high yield of late-maturing maize in summer maize. The accumulation of wheat in the wheat field can increase the accumulated temperature of about 300 °C, which is an effective way to solve this contradiction. According to the multi-point experimental investigation, the intercropping of late-maturing maize varieties is more than 667 square meters. Corn 66.5 ~ 82.9 kg, an increase of 13.3% ~ 16.7%. Due to the influence of old planting habits, most farmers often use the method of direct seeding to grow corn after harvesting, while the perennial corn intercropping area only accounts for 20% to 30% of the total area, resulting in low yield and poor quality, especially in case of When it comes to buds, autumn drought, late low temperature and other unfavorable climatic conditions, it will cause serious production cuts. Therefore, it should be changed to late seeding for interplanting. For wheat that can not be planted, wheat is mixed with wheat and yellow water to make sputum. 10 to 15 days in advance to ensure high yield and stable yield of corn.
2. Change the single fertilization to formulate fertilization
For a long time. Farmers used to apply nitrogen fertilizer in corn fertilization, neglecting the effects of nitrogen, phosphorus, potassium and micro-fertilizers, resulting in single nutrient and unsatisfactory yield increase. A number of test results show that in the case of the same applicable nitrogen fertilizer, every 667 square meters Add 25 kg, 50 kg, 75 kg of phosphate fertilizer, and increase the yield of corn by 1.90 kg, 1.72 kg, 1.45 kg per kilogram of phosphate fertilizer; 10 kg, 20 kg, 30 kg of potassium sulfate per 667 m2, respectively, increase per kg of potassium sulfate 4.85 kg of corn, 3.46 kg, 2.26 kg, 0.5 kg, 1 kg, 2 kg, 4 kg per kg of zinc sulfate per 667 m2, respectively, yielding 105.8 kg, 68.6 kg, 30.2 kg, 38.5 kg of corn, respectively. The principle of “increasing nitrogen, increasing phosphorus and increasing potassium and increasing zinc respectivelyâ€. Requires 667 square meters of standard nitrogen fertilizer 50 kg, standard phosphate fertilizer 40 ~ 50 kg, potassium sulfate 10-15 kg, zinc sulfate 1-2 kg, the test results show that this fertilization method increased yield by 24.8% ~ 35.2% than single nitrogen application.
3. Reforming the application of nitrogen fertilizer for staged fertilization
For many years, farmers have been accustomed to fertilizing nitrogen fertilizers in a large trumpet period. This method of fertilization is not conducive to the cultivation of strong seedlings in the intercropping of corn, and can not meet the needs of fertilizers in the high-yield field during the filling stage. According to the needs of nitrogen fertilizer in different growth stages of corn and the fertilizer characteristics of different sowing methods, the following nitrogen fertilizer application schemes are proposed: The high-yield field implements the “three-attack†topdressing method. When the leaf age index is 30%, about 30% of the total fertilization amount is applied to the nitrogen fertilizer attacking stalk. When the leaf age index is 60%, 60% nitrogen fertilizer is applied, and the remaining 10 % is applied to the seed during the filling period. The field is generally divided twice, at 30% and 60% of the leaf age index. The intercropped corn was light and heavy before the first time, 60% for the first time and 40% for the second time. The live corn is light and heavy. The experimental results show that the application of nitrogen fertilizer in stages is increased by 9.9%~12.1% compared with “one shelling†fertilization.
4. Change to relax in the middle and late management
In the middle and late stages of corn production, it is a key period for the formation of yield. It is often caused by drought, de-fertilization, premature aging, and red spider damage. Therefore, measures should be taken to strengthen the medium-term management. First, the land should be replenished. Attacking seed fertilizer, preventing premature aging and increasing grain weight, secondly, timely watering in case of drought, so that the field water holding capacity is maintained at 80% or more, and the third is when red spider is used with 0.2% Aweidu clearing oil 2500 times liquid or 1.8% Jiqi Insect gram milk 3,000 times solution was applied for 2 to 3 times, and it was eliminated in the spotting stage.
5. Change early to receive a timely receipt
When farmers harvest corn, there is a widespread early harvest. Generally, about 40 days after pollination, when the leaves are yellow, they are harvested. At this time, the filling has not yet ended, which seriously affects the yield. According to the results of multi-species multi-point experiments, the corn kernel milk line was moved down by 1/2. At this time, the loquat leaves just turned yellow, and the 1000-grain weight averaged 324.7 g. The corn kernel milk line basically disappeared. At this time, the loquat leaves were loose and white, and the 1000-grain weight averaged. 357.2 grams. Moving from the lower line of the milk line to 1/2, the milk line basically disappeared. After 10 days, the 1000-grain weight increased by 31.5 g and the yield increased by 10%. Therefore, corn harvest should be harvested when the grain milk line disappears and the leaves are white and dry.
In summary, as long as you pay attention to changing the old planting habits, training the correct planting habits can achieve the purpose of increasing production and income.
There are mainly the following parts: 1. Sampling swab with disposable sterile plastic rod/rayon head 2. Sterile sampling tube containing 3ml of virus maintenance solution (gentamicin and amphotericin B are selected to better inhibit the fungus in the sample. Avoid the human sensitization reaction that may be caused by penicillin in the traditional sampling solution.) In addition, there are additional parts such as a tongue depressor, a biosafety bag, etc. Intended to use 1. It is used for monitoring and sampling of infectious pathogenic microorganisms by disease control departments and clinical departments. It is suitable for sampling of influenza virus (common influenza, highly pathogenic avian influenza, H1N1 influenza virus, etc.), hand, foot and mouth virus and other types of viruses. It is also used for sampling of Mycoplasma, Chlamydia, Ureaplasma, etc. 2. It is used to transport nasopharyngeal swab samples or tissue samples from specific parts from the sampling site to the testing laboratory for PCR extraction and testing. 3. It is used to preserve nasopharyngeal swab samples or tissue samples from specific parts for necessary cell culture. The virus sampling tubes are loaded with infectious substances, and some are even highly pathogenic substances. Therefore, the requirements for packaging containers are very strict, and three requirements must be met at the same time: 1. The safety of transportation. Ensure that the sample does not leak during transportation. Sampling tubes that comply with WHO regulations and biosafety regulations. 2. The security of preservation. Ensure that the sample does not leak during storage. Sampling tubes that comply with WHO regulations and biosafety regulations. 3. The validity of the sample. Make sure that the sampling tube itself will not have a toxic effect on the sample.
Virus Sampling Tube,Virus Sampling Kit,Disposable Vtm Sampling Kit,Vtm Sampling Tube With Swab
Jilin Sinoscience Technology Co. LTD , https://www.contoryinstruments.com