我市茶坊区沈家屯乡高家屯村农民张万真利用地膜覆盖春番茄并在番茄架下套种中熟元白菜,两种蔬菜共生期40天左右。0.8亩番茄收入1400元,元白菜收入400元。两茬共收入1800元,折合亩收入2250元。他的具体做法如下: 一、春番茄栽培技术 1.选择优良品种,培育适龄壮苗:番茄要选择早熟丰产的品种,他选用的是“早粉二号”。三月初庭院里小棚覆盖育苗。提前3～5天扣棚烤地。润床后把经过温汤浸种并催芽的种子播于畦内。秧苗出土后结合浅中耕分次逐级间苗直至营养面积到8厘米见方止。温度管理白天不超过25～28℃,夜间不低于8～10℃,通过逐渐放风来降低棚内温度。到4月中旬应加大放风量,为定植进行 Zhangjiazhen, a farmer in Gaocuntun Village, Shenjiatun Township, Chafang District, Shanghai, uses spring mulching to cover the spring tomato and intervene in the tomato under the rape. The two vegetables live together for about 40 days. 0.8 mu tomato income 1400 yuan, 400 yuan cabbage income. The two crop total income 1800 yuan, equivalent to 2250 yuan of mu income. His specific practices are as follows: First, the spring tomato cultivation techniques 1. Select the fine varieties, nurturing age-strong seedlings: To choose early and high yield varieties of tomatoes, he used the “early powder No. 2.” In early March, the shed covers the nursery. 3 to 5 days in advance deduction shed roasted. After the bed after soaking warm seeds and sprouted seeds sow in the 畦. After the combination of shallow-tillage seedlings unearthed graded seedlings until the nutrient area to 8 cm square stop. Temperature management during the day does not exceed 25 ~ 28 ℃, night is not less than 8 ~ 10 ℃, through the gradual ventilation to reduce shed temperature. To mid-April should increase the amount of ventilation for planting