Rapeseed, widely used, is a beautiful landscape, and its seeds can be oiled. It is widely distributed in China and is loved because of its rich nutrition, especially the content of vitamin C is very high. To this end, the research and analysis of "high-yield cultivation techniques and pest control" of rapeseed is particularly important. In order to truly achieve high-yield cultivation of rapeseed, it is recommended to start from the following aspects: First, rapeseed high-yield planting technology strategy (1) Choosing good varieties In terms of variety selection, whether it is high quality, high yield, or good disease resistance can be said to be the main considerations. In addition, it is forbidden to blindly copy the experience and practices of other regions, because the same variety is planted in different regions, and the results are also somewhat different. Therefore, it is important to choose the right variety based on local conditions. (2) Applying enough base fertilizer The application of base fertilizer is directly related to the ultimate yield of rice. Under normal circumstances, the base fertilizer mainly has fully decomposed farmyard manure, diammonium phosphate, potassium sulfate and ternary compound fertilizer with a concentration of 45%. The dosage is 3000 kg per mu. To 5000 kg, 20 kg to 25 kg, 10 kg to 15 kg, 10 kg to 15 kg and 40 kg to 50 kg. (3) Do a good job in seed processing The treatment of rapeseed seeds mainly includes seed selection, sun-breeding, soaking in warm soup, soaking seeds, etc. The main purpose is to improve the purity and quality of seeds, further enhance the germination potential and increase the germination rate. (4) Do a good job of planting Seeding should be fine, and the time for sowing is generally in the end of March each year. The number of seeds per acre is recommended to be controlled at 350 grams. It should be noted that before sowing, watering should be done according to the soil moisture, and then sowing after the water is completely infiltrated. (5) Doing a good job in field management One of the important tasks in field management is the seedling. The first seedling is usually carried out when the two leaves are unfolded. The seedling distance is controlled from 3 cm to 4 cm. When the four leaves are one heart, the second seedling can be carried out. It can also be called a fixed seedling. The distance between the seedling and the seedling is about 8 cm to 10 cm, and the number of seedlings per acre is about 40,000. In fact, the water requirement of rapeseed in the seedling stage is relatively small, that is to say, if it is not dry, there is no need to water the water. After the completion of the seedlings, the watering should be timely. It is recommended to control the number of irrigation times to 3 times. 4 times, it is best to be able to do it under ideal weather conditions. Another point to note is that in the half-month before harvest, a top dressing is required. The main fertilizer is urea and ammonium sulfate, and the doses are 20 kg to 25 kg and 20 kg, respectively. (6) Do a good job in clearing the ditch When the rainy season is reached, it must be drained in time, because if there is waterlogging, it will not only affect the normal growth and development of rapeseed, but even lead to the occurrence and prevalence of some epidemics. To this end, it is necessary to do a good job in the drainage of rapeseed Tianqinggou, especially in areas where the drainage conditions are not ideal. (7) Do a good job in fertilization Whether fertilization is scientific and reasonable is directly related to the yield and quality of rice. In particular, it is necessary to pay attention to spraying boron fertilizer. Therefore, the content of boron in the soil is not ideal, and once boron is scarce, it is easy to appear unrealistic or The phenomenon of returning flowers. There are three main ways to apply boron fertilizer, namely bottom application, top dressing or foliar application. Second, the control strategy of rapeseed pests and diseases In the whole growth and development of rapeseed, the common diseases are mainly sclerotinia, downy mildew and black rot. Therefore, we must do a good job in the prevention and control of pests and diseases, promptly and decisively remove the lord and diseased leaves. If the diseased leaf rate reaches 10%, it is necessary to take timely pesticide control methods. In fact, in order to really do a good job in the prevention and control of pests and diseases, I suggest to start from the following aspects: (1) To select good varieties and to handle the seeds at the same time The selection of some varieties with the best disease resistance is very important for the prevention and control of pests and diseases. If the seeds can be properly treated before sowing, the sclerotium mixed in the seeds can be removed. (2) Based on local actual conditions, reasonable rotation Scientific and reasonable rotation has a positive effect on the prevention and control of pests and diseases. The common method is to use rice-canola rotation or planting with grass crops every other year, which can effectively reduce the occurrence of pests and diseases. (3) Doing a good job in curing disease at the seedling stage Aphids are the main vector for rapeseed virus disease, so it is necessary to do a good job in the control of aphids. Before transplanting rapeseed, it is necessary to check the insects frequently. Once the mites are found, they should be treated immediately. The commonly used control agent is anti-Converse or a 48% concentration of lesburn oil. (4) To further improve field management Scientific field management is especially important for the comprehensive prevention and control of pests and diseases. It is mainly to make the choice of seedbed, the cultivation of strong seedlings, the elimination of bacterial sources and rational fertilization. More pesticide knowledge , please pay attention to China Pesticide Network
Oil drill pipe drill collar
The company's business scope covers oilfield technical services, Oil Drilling Tools, oil pipes, steel rolling trade, international trade and many other fields. The main products include: petroleum drill pipes, drill pipe joints, drill collars, spiral drill collars, weighted drill pipes, kelly pipes, non-magnetic drill collars and other petroleum drilling tools, as well as various petroleum drilling equipment. The company has long adhered to the quality and efficiency road, continued to promote lean production, and actively built the quality and brand advantages of national oil drilling tools.
Oil Drill Pipes,Drill Collars,Spiral Drill Collars,Weighted Drill Pipes Rugao Yaou Import & Export Trade Co., Ltd , https://www.ntyaoumachinery.com