Every year, there are some unscrupulous traders selling fake and inferior grain. Due to the long seed growth period, farmers are suffering after being harassed, and sometimes even miss the best planting time. Of course, if you want to make a qualitative judgment on the true and false of a certain seed, only the sample is sent to a qualified seed inspection and testing institution to be positive. However, Xiao Bian first provides some suggestions for the appearance of everyone, and preliminary exclusion of fake and inferior seeds!
First, from the seed label and the appearance of the package to identify the true and false
1. See if there are rice instructions or varieties. The content should include suitable planting areas, characteristics, and cultivation measures. It is best not to buy without instructions and variety descriptions to prevent being deceived.
2. Look at the label. The label shall be marked with the seed category, variety name, origin, quality index, quarantine certificate number, seed production and business license number or import and export approval document number. The label shall be consistent with the seeds of the sale, and any of the above shall be missing. Then you should ask questions.
Second, from the physical and chemical properties of the seed itself to identify the true and false
1. Look at the uniformity: the hybrid seeds mixed with other rice are not neat, such as mixed into the male parent or other glutinous rice grains, which are obviously slender and fuller than the hybrid seeds, and the glutinous rice grains are rounder.
2, look at the color of the chaff: hybrids on the chaff slightly uneven yellowish brown and other physiological variegated, while the father, the maintainer and other grains are more consistent. The maintainer lines and other hybrids have higher grain transparency than the hybrid seeds, and the chaff is smoother than the hybrids.
3, moisture identification: bite with a tooth, finger licking. Take a grain of rice and bite it with teeth. The grain has a broken sound and the section is smooth. The water content of this seed is generally about 13%. If there is no broken sound or the grain is not uniform, the water content of the seed is generally high. At 13%.
4. Clarity identification: Generally, when the seeds are visually inspected, there are no soil particles or sand grains. They are inserted into the seed pile or the seed bag by hand. When the fingers are pulled out, there is no dust and other impurities on the back of the hand. At this time, the purity of the seeds is generally about 97%.
5, Chen seed identification: Where the seed coat color is fresh, the shell yellow, the embryo is full and full, when the embryo is dug, the green is moist, the seed is a new species with high vigor; on the contrary, the seed coat is dark, the seed coat is dark brown. Dry, this type of seed is a weak seed.
6. Observing the lesions: The shells of the rice species are dark brown or have irregular spots and lumps, which are all seeds of infectious diseases. If the seeds infected with rice blast have dark brown patches on the surface, the uninfected seeds are asymptomatic.
7. Observe the embryo: The appearance of the high-quality rice is smooth and lustrous. The embryo is full and full. When the hand is rubbed, the embryo has a moist feeling and is green. The inferior rice seed is darker and dry.
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