大麦——环棚西瓜——水稻三熟制优化配套模式栽培的目标,是以保粮为前提,增值为基础,提高土地产出率,实现粮食、经济双丰收。本模式适合于温光资源两熟制有余,三熟制不足和早春温度回升慢、初夏梅雨多、秋季低温来临早的地区。其技术途径是以早熟高产为中心,采取早茬口,早中熟品种和早熟促成栽培的配套技术。这模式的成本投入较地膜栽培高,但西瓜丰产稳产性好,上市早,价格高,水稻移栽早、单产水平高。现将配套模式介绍如下: 一、产量指标粮食亩产指标600～625公斤,其中大麦150 Barley - Cloaks watermelon - rice cultivation system of three matching optimization objectives, is based on the premise of saving grain, value-added as the basis to improve the yield of land to achieve a double harvest of food and economy. This model is suitable for Wenghuang resources more than two systems, lack of three systems and early spring temperature recovery slow, early summer rainy season, the arrival of autumn cold early. The technical approach is to early and high yield as the center, to take stubble, early maturing varieties and precocious cultivation techniques. The cost of this model is higher than that of plastic film cultivation, but the yield of watermelon is high and stable, and the market is early and the price is high. The rice is transplanted early and the yield is high. The supporting modes are as follows: I. Output Indicators The yield per mu of grain is 600-625 kilograms, of which barley 150