The pomelo plantation building
It is a base which build pomelo plantation. It would be create quicken up, fertility, stabile production, high quality, longevity, and so on. Guanxi Honey pomelo likes the soil is humid, loamy, and loose; entironment is eutropic, warm, lee, and good of irrigation and drainage. Choosing alluvial plain, riverain alluvion,and paddy field to build plantation. Those are important that barrel-drain’s construction, take from groundwater level, and add ply of growth soil. They make for grow of root. It is choosing down 15? gentle sloping field and back north where droughty sloping field and hilly country to build plantation.

The pomelo plantation must have thick soil, loose soil,and rich waterhead, groundwater level low, and convenient traffic. Building plantation bases gradient to decide terrace width, hilly country need herby belt of back brae. Commonly, terrace is 3-4m breadth; single file planting is propitious to solarization and management. It has been excavated 80-100cm wide and deep planting channel, or 100cm³ planting hole.

Planting channel (hole) substrate filled grass or straw and aloe; middle-level filled new soil, manure and P-fertilizer; superstratum filled mixture barmy muck and improved calcium-magnesium-phosphorus fertilizer. Make it as seedling planting spot. Backfill must need tower above 20-30cm for ground to avoid soil sinked. Planting spot usually used farmhouse muck 10-15kg, improved calcium-magnesium-phosphorus fertilizer 1-2kg, planted standard is 4×4 m or 4×5m.

Choose and grow of young grapefruit
It is important precondition which Choosing lusty young grapefruit for grapefruit quicken up, premature delivery, fertility, and high quality. It has two kinds of Young grapefruit of Guanxi Honey pomelo, one is high pressure seedling, and the other is graft seedling. High pressure seedling is steady and put into production early, but root easy to break, low survive efficiency, no upright root, easy to typhoon damage. Only cion seedling is sterling breed about graft seedling, developed root, lusty seedling and high survival probability. Now, graft seedling is main choice in production. Over ten years, rootstock used local pomelo, sour pomelo, red orange, lemon, Jiao citrus,and Shatian pomelo. Sour pomelo is the best has good affinity with cion, root upgrowth, strong resistibility, fruit early, fertility, stabile produce,and longevity. Graft would better use sterling breed of fine seedling of Guanxi Honey pomelo, the best is spring treetop of grown grapefruit.

Simultaneity, seedling has got to root bloom, caudex strong, diameter of caudex has over cm, has branch and thick green leaves 1-2 year, no plant diseases and insect pests, and accord with national standardization.

Planting has two kinds: nutritious bag ersatz planting and afterward transplant, or straight planting. One way, near new plantation, choose paddy field to convenient for use weave bag loaded manure soil (farmhouse muck and improved calcium-magnesium-phosphorus fertilizer ); make 3-4 rows, one bag one seedling; water enough and earth up, to keep water and bag damaged by solarization. After one year, transplant these seedlings, never limit of season. Pomelo plantation could plant one year green manure or other crop.

The other way, seedling is becomingly sheared some tenders and top leaves, root touched slurry (add 0.2% monopotassium phosphate and 5000 times quick foison), and then, plumb the centre of planting hole; roots face adown, after earth up to prop up seedling; bed filling thin soil and packing to roots touch soil adequately; irrigate first fixed water after earth up, once more earth up to near graft orifice. Since cover with dry grass, irrigate second fixed water enough. After that, water one time every day in first three days, since water one time every 2-3 days. Keeping wet soil until new root growing and seedling comeback.

Planting season has winter’s planting, spring’s planting and autumn’s planting. Winter’s planting in “Great cold” to “Spring begins”, plant seedling before spring treetop germinate, here, seedling’s moisture has a little, low temperature, be propitious to long distance transport. After planting, cover straw to keep temperature and humidity, it will grow new spring treetop when it survived. If temperature low 2?, there couldn’t plant in that season.

Spring’s planting in “Clear and bright” to “Grain rain”, spring treetop turn green, here, temperature back quick and steady, more rainfall, after planting, root grows quickly and survive high. But easy to miller insect pest, need intensify prevention.

Autumn’s planting in “Autumn begins” to “Cold dews”, summer treetop turn green, in the season, a little of rainfall, high temperature, ample sunlight, meanwhile there need sufficient wellhead and convenient meanwhile. After planting, cover straw and often water to help grown and survived.