How to carry out field management of transplanting seedlings before and after winter
(1) The wax fertilizer should be reused before winter "If you were in the winter, you would like to cover the quilts for three winters." The wax fertilizer has a warming effect on the soil, which is not only beneficial to the development of the root system, but also can provide nutrients to rape and increase the ability to resist cold. Wax fertilizer is generally used for delayed fertilizers, and after decomposition in winter, it provides part of the nutrients required for the vigorous growth of spring rape. It is generally called "Lao Shi Chun". (2) Early application and stable application of fertilizer Feifei should be properly applied according to weather, seedling conditions, and soil conditions. In spring, high temperature, heavy rainfall, fertile fertility, waxy fertilization, strong growth of rapeseed, and less application of manure; low temperatures, poor soil fertility, weak rapeseed growth, red-brown stems, and early decay tendency of rape to be applied early and heavy Shi Fei; Manure is generally applied at a height of about 10 cm. Double-low quality hybrid oilseed rape and conventional rapeseed varieties must be applied early, that is, before the Lunar New Year's Eve, generally about 7.5 kg of urea per acre. (3) Drainage in the ditch and control of Sclerotinia In the paddy-oil or cotton-oil two-cropping areas in the southeastern rice-rice-oil-three cropping areas of Hubei Province, due to soil moisture and soil mass, in order to reduce the humidity in the field and reduce the breeding sites for pathogens, it is necessary to More trenches, deep trenches, clean trenches after the spring clearing. At the same time, in the first week after the flowering period, use 50% carbendazim WP 500 to 1000 times or sclerotinal powder 1000 to 1500 times to spray the lower part of the plant, spray each time the liquid 80 to 100 kg, prevention and treatment Sclerotinia disease. Our nucleic acid extractor has two models, one is NFAST 32A and the other is NFAST 96. NFAST 32A can extract up to 16 samples at a time, and NFAST96 can extract up to 96 samples at a time. Customers can choose the corresponding model according to their needs. rna extraction kit price,rna isolation from blood,viral nucleic acid extraction kit,kit rna extraction,zymo rna extraction Shenzhen Uni-medica Technology Co.,Ltd , https://www.uni-medica.com