One Question per Day on the Basic Knowledge of Compound Fertilizers and Functional Fertilizers – 95

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True or False: 1. The supervision and management methods for mixed fertilizers and compound fertilizers are different: Since the production of mixed fertilizers generally does not require expensive chemical equipment, it is relatively easy to pass off inferior products as high-quality ones, or fake products as genuine ones. To protect the interests of farmers, **the quality and technical supervision authorities enforce supervision and management through the “Industrial Product Production License” system. However, the production of compound fertilizers does not require such a certificate. ( ) 2. The critical period for crop nutrition refers to the stage in a crop’s growth cycle during which, although the amount of nutrients required is not large, their absence, excess, or imbalance can have a significant negative impact on the crop’s growth and development. For most crops, the critical period generally occurs in the early stages of growth; the critical period for phosphorus appears early, followed by nitrogen, and potassium later. ( ) In the compound fertilizers and functional fertilizers section, a daily quiz on basic production knowledge is carried out. We hope that all marine enthusiasts will participate actively. The purpose of this activity is to review the knowledge we have already learned, and to improve and strengthen everyone’s fundamental theoretical knowledge through answering questions, thereby reinforcing what we already know and helping us recall what we have forgotten. The top 50 answerers will definitely receive a reward. Please reply with the answer hidden; otherwise it will be invalid. To view the hidden method, go to: http://bbs.hcbbs.com/thread-492556-1-1.html Please do not edit after replying! 1、√ 2、√