A) Warm and humid subtropical B) Cold and dry temperate C) Cool and mountainous alpine D) Hot and arid desert
A) Pure sand B) Well-drained, sandy loam C) Waterlogged peat D) Heavy clay
A) 6.0-7.5 B) 8.0-9.0 C) 9.5-10.5 D) 4.0-5.0
A) Direct seeding B) Grafting C) Root cuttings D) Air layering
A) Spring or early summer B) Mid-winter C) Late autumn D) Dry season
A) 1-2 meters B) 3-4 meters C) 6-8 meters D) 10-12 meters
A) To prevent flowering B) To improve fruit production and tree shape C) To attract pests D) To stunt growth
A) Potassium B) Phosphorus C) Nitrogen D) Calcium
A) Only during the rainy season B) Very sparingly to encourage deep roots C) Never, they are drought-tolerant D) Regularly, especially during dry periods
A) Earthworm B) Ladybug C) Citrus psyllid D) Praying mantis
A) Tomato blight B) Citrus canker C) Powdery mildew D) Rose black spot
A) Copper sprays and sanitation B) Ignoring leaf spots C) Nitrogen-rich fertilizer D) Overwatering
A) Applying fertilizer B) Pruning the branches C) Removing a ring of bark to promote fruiting D) Wrapping the trunk with cloth
A) Pruning the roots B) Gradually acclimating seedlings to outdoor conditions C) Applying fertilizer D) Keeping them in a dark room
A) A high-nitrogen fertilizer B) A lawn fertilizer C) No fertilizer is needed D) A balanced citrus fertilizer
A) Increases soil temperature B) Conserves moisture and suppresses weeds C) Attracts pests and diseases D) Depletes soil nutrients
A) 0-10% B) 90-100% C) 60-80% D) 20-40%
A) Root aeration B) Pollination C) Pest control D) Fertilizer application
A) In a warm, humid place B) In water C) In direct sunlight D) In a cool, dry place
A) To block sunlight B) To protect trees from strong winds C) To attract pollinators D) To increase humidity
A) To increase the number of fruit B) To prevent pests C) To stunt tree growth D) To improve the size and quality of remaining fruit
A) When the fruit is completely dry B) When the fruit turns slightly yellow and feels heavy C) When the fruit is still green and hard D) When the fruit falls off the tree
A) To increase soil temperature B) To reduce competition for nutrients and water C) To provide shelter for beneficial insects D) To attract pollinators
A) To provide disease resistance and adaptability B) To increase fruit size C) To prevent flowering D) To change the fruit flavor
A) Decreases nutrient availability B) Promotes waterlogging C) Prevents root rot D) Increases soil salinity
A) Wrap the trunk and branches with burlap or frost cloth B) Water excessively C) Prune heavily D) Remove all mulch
A) Dark green leaves B) Abundant flowering C) Yellowing leaves D) Thick branches
A) Climate suitability B) Fruit color C) Branch thickness D) Leaf shape
A) Improve soil health and suppress weeds B) Attract pests C) Increase soil acidity D) Deplete soil nutrients
A) Enhance nutrient uptake B) Attract pests C) Cause root rot D) Prevent photosynthesis |