西瓜大果型品种,具有较大的增产潜力,容易获得高产,但若管理失误,也难达到增产目的。因为西瓜栽培强调每株留1个果实,所以,西瓜的产量取决于667平方米株数和单果平均重量两个方面。 西瓜667平方米株数,应依据所种品种的生育期长短(熟性)、生长势强弱、单株留蔓数和土壤肥力来确定。要使叶面积系数保持在1.5～1.8,防止田间郁闭。单果平均重量是决定单位产量的主要因素,也是提高西瓜产量和品质的关键。为使西瓜高产优质,应从以下几个方面入手。 1.选择优质高产品种:多年生产实践表明,大庆市庆农 Watermelon large fruit type, with greater yield potential, easy access to high yield, but if management errors, it is difficult to achieve the purpose of increasing production. Because watermelon cultivation emphasizes leaving a fruit per plant, so the yield of watermelon depends on the number of 667 square meters and the average weight of two fruits. Watermelon 667 square meters, the number of varieties should be based on the length of the growing season (maturity), the growth potential, vine per plant and determine the soil fertility. To keep the leaf area coefficient 1.5 ~ 1.8, to prevent the field canopy. The average weight of single fruit is to determine the unit yield of the main factors, but also improve the yield and quality of watermelon key. To make watermelon high yield, should start from the following aspects. 1. Select high-quality high-yield varieties: Years of production practice shows that farmers in Daqing City