Five varieties of rice purchases
First, we must pay attention to the selection of seed suppliers with complete business licenses and legal qualifications. Don't buy seeds in unlicensed stores, street stalls, and seed vendors who sell in the village. Don't forget to ask the supplier to open a valid invoice (or seed quality credit card) when purchasing the seed, and keep the purchase invoice and seed packaging in good condition, in case the seed quality is problematic. When buying two kinds of seeds, pay attention to the description of rice instructions or varieties. The content includes suitable planting areas, characteristic characteristics, and cultivation measures. Third, we must pay attention to whether the packaging is standardized. The seeds and outer packagings distributed by the seed company are relatively standardized. The quantity, quality index, manufacturer, business license number, place of origin and contact telephone number are clearly marked. 4. Pay attention to the seed production date marked on the seed bag. Seeds produced in the next year are not purchased; seeds that do not indicate the date of manufacture are not to be purchased. Fifth, we must pay attention to identify the quality of the seed: 1. Look at the purity of rice seeds. The purity of conventional rice seeds should not be lower than 98%, and the purity of hybrid rice seeds should not be lower than 96%. 2. Look at the seed clarity. The content of impurities such as empty granules and sediment is controlled at 1.5% to 2.5%, and more than 5% is inferior seeds. If the seed is free of soil particles, sand, or hand inserted into the seed pile or seed bag, there is no dust and other impurities on the finger joint and the back of the hand when pulling out. Usually, the purity of the seed is about 97%. 3. View the water content. The national standard is no more than 13% for japonica rice and no more than 14.5% for japonica rice. Look at the seed moisture, generally bite with your teeth and rub your fingers. Take a grain of rice and bite it with your teeth. The sound is “squeaky†and crisp, and the section is smooth and smooth. 4. Ask about the germination rate. The national standard conventional rice is not less than 85%, and the hybrid rice is not less than 80%, otherwise it is inferior. 5. Observe the embryos. The quality of the rice seeds is smooth and lustrous, and the embryos are full and full. When the hands are rubbed, the embryos have a moist feeling and are green. Inferior rice seeds are dried and dark in color. 6. Identify new and old seeds. Where the seed coat is fresh in color, yellow in shell, and the embryo is full and full, when the embryo is excavated, it is moist and green, and it is a new species with strong vigor; on the contrary; the color of the seed coat is dim, and the embryo is dark brown and dry, which is a seed with weak vitality. In the new species, there are no shells, insects (powder) and insects. 7. Observe the lesion. The outer shell of the rice is dark brown or has irregular spots and lumps, which are all infected diseases. Blowing Mouth,Disposable Blowing Mouth,Filter Spirometer Mouthpiece,Disposable Spirometer Mouthpiece Hengshui Qifei Paper Products Co. LTD , https://www.hengshuiqifei.com