西瓜一年三熟(露地)栽培技术

露地种植西瓜采用一年三熟栽培模式,可解决人口多、耕地少、粮食作物和经济作物争地的矛盾.通过春瓜选用迟熟无籽西瓜、夏瓜和秋瓜选用早熟有籽西瓜的科学搭配,严格进行种子、营养土和大田土壤消毒,嫁接育苗,健身栽培和预防为主的防病措施,西瓜每公顷产量可达105000kg,比一年二熟栽培每公顷增产22500kg,增加产值2.25万元以上,经济效益显著.关健词：西瓜;栽培模式;一年三熟;栽培技术

Watermelon cultivation techniques for three croppings per year in open fields

Watermelon was cultivated in open fields by applying a cultivation pattern of three croppings in one year, it could resolve the contradiction such as excess of population and short of farmland and the cultivating land contest between grain crops and cash crop. By selecting a scientific combination of that late mature seedless watermelon cultivated in spring crops, early mature seed watermelon in summer and autumn crops, strictly sterilizing of the seed, nutritions and field soil, and raising seedlings by grafting, healthy cultivation and taking precautions to control diseases, the yield per hectare was up to 105,000kg, increased 22,500kg over the two croppings per year cultivation pattern, and the increased output value was more than 22.5 thousand yuan, the profits was obvious.