This year, due to the overcast and rainy weather in October and December in Kai County, the temperature is relatively low, and the waterlogging of rape is more obvious. The growth of rapeseed is not optimistic. Based on the current situation of the seedlings and winter spring trends, the following technical advice on field management of rapeseeds in winter and spring is proposed.
First, strengthen the forecasting report and eliminate it in time. Strengthen forecasting and timely prevention and control. When the strain rate of rapeseed field reaches 8%, the back of rape leaf can be sprayed with 10% imidacloprid wettable powder 40-60 g and 40-50 kg water per acre.
Second, Qinggou dregs, warming and keeping seedlings. This year, my county has more rain in autumn and winter, and rape roots are underdeveloped. The rainy weather often occurs in March and April of the calendar year, which will affect the development of the root system, especially the rice-rice rapeseed. The water in the field is serious and is prone to waterlogging. Therefore, during the overwintering period, clearing and digging should be promptly conducted to keep the “three channels†open, prevent stains from falling, and promote root growth. At the same time, Qinggou clay was cultivated in the root of rapeseed, inhibiting the growth of weeds and increasing the temperature and preventing freezing. Rape rape can be combined with weeds for cultivating soil in the cultivator to increase the temperature of soil in the root of rapeseed, control the growth of aboveground of rapeseed, promote the development of root system, enhance the cold resistance of plants, and reduce the threat of freezing damage. Ensure rapeseed seedlings are overwintering.
Third, to control the moss, control Wang antifreeze. For rapeseed that has been bolting and has a height of 30 cm or more and the growing point (inflorescence) is exposed or has blossomed, the main moss should be removed with a blade on a sunny day to eliminate the threat of freezing damage during the winter and reduce the main The nutrient consumption of stems is conducive to the germination of the lower dormant buds and the loss of yield due to freezing damage of the main stem. For some of the prosperous plots, 40-50 kg uniform spray of 80-100 ppm paclobutrazol solution per acre should be selected to prevent excessive growth of rape and enhance the cold resistance of rapeseed.
Fourth, the use of moss fertilizer, anti-increase income. The fastest growing rapeseed in spring is the period when the rapeseed needs the most fat. Should apply fertilizer in time to increase the number of branches and buds. Fertilizer application should be classified according to growing conditions. Generally can apply Urea 8-12 kg. On the bottom of the foot, Miaofei more, steady growing, good seedlings should be less applied, so as not to cause greed and green lodging; the seedlings weak seedlings, weakness in the field soon to apply early, and appropriate amount of multiple facilities. Potassium chloride 4-6 kilograms may be added at the same time when applying the nourishing fertilizer to promote the growth of rapeseed, increase lodging resistance, and resistance to disease. Boron-deficient soil and base fertilizer without application of boron fertilizer should be sprayed with 1-2 times of 0.2% borax aqueous solution (dissolved in warm boiled water) during the bud stage to prevent rape from “floweringâ€.
Fifth, do a good job in the detection and prevention and control of Sclerotinia. The prosperous plots in the previous period had poor ventilation and light transmission, and the disease resistance of rapeseeds was reduced. Sclerotinia sclerotiorum was prone to occur during the flowering stage and during the fruit development stage. It is necessary to intensify the monitoring and reporting, and do a good job of prevention and control in a timely manner to reduce the risk of S. Before the flowering stage, when the incidence of plant leaves reaches 10%, it is necessary to snatch the net with 40% sclerotium net 0.1-0.2 kg or 50% carbendazim WP 0.1-0.2 kg watered 40-50 kg Focus on the plant The lower stems and leaves are sprayed on the ground.
So what does 4K resolution mean?
In the digital technology field, people usually use the binary operations and the pixels to describe the size of the digital image. Due to the huge number of pixels that make up a digital image, the digital image size is usually represented by K. The 10th power of 2 is 1024, so: 1K=2^10=1024, 2K=2^11=2048, 4K=2^12=4096. How many 1024 pixels there are in the horizontal direction means how many K a video includes. Specifically speaking, for example, the resolution 2048×1080, 2048 represents the number of pixels in the horizontal direction and 1080 represents the number of pixels in the vertical direction; similarly, when the resolution is 4096×2160, 4096 represents the number of pixels in the horizontal direction, and 2160 represents the number of pixels in the vertical direction. In the actual production of alphanumeric version and digital projection, the number of pixels in the horizontal or vertical direction of the image needs to be adjusted according to different aspect ratios. Therefore, the resolution of 8847360 pixels close to the 4K image can also be called the 4K such as the resolution 3840*2160 which is common on the market. And strictly speaking, the standard 4K resolution is exactly 4 times the number of pixels of the 2K resolution 2048×1080, and 16 times the number of pixels of the 1K resolution 1024×540.
4K resolution belongs to the Ultra HD resolution, which means that the audience will be able to see every detail and close-up in the photos/videos at this 4K resolution. If 4K resolution is applied to the cinema, the audiencescan cearly see every detail and close-up of the film whichever cornor of the cinema they are at.
4K resolution refers to that the pixel value per line in the horizontal direction reaches or approaches 4096, regardless of the aspect ratio. 4K resolution also has a variety of derivative resolutions, such as the Full Aperture 4K(4096*3112), the Academy 4K(3656*2664), and the UHDTV 4K(3840*2160), etc.,. And in the security and protection field, when we mention the 4K resolution, it refers to 3860*2160, 800W pixels.
4K resolution fits the resolution standard of the new generation of the Hollywood blockbusters. Different from both the so-called high-definition TV (1920×1080 resolution)that we watch at home and the large 2K resolution screen (2048×1080 resolution) of the traditional digital cinema, the 4K resolution means the ultra-high resolution video of the 4096×2160 resolution. The traditional high-definition TV shows the video of 2.07 million pixels, the traditional digital cinema shows the video of 2.21 million pixels, while the 4096×2160 resolution theater can show the high-definition video of 8.85 million pixels.
In conclusion, we should correctly know about the 4K and the resolution, and choose the most suitable resolution when we buy a electric device, the DVR, the security monitoring device or something.
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