一、品种要适宜目前,我国桃树的大棚栽培一般为促前栽培,即通过覆棚栽培使果实提早上市。因此,在选择品种时要注意以下3点。第一,要早熟品种,一般以果实生育期60~70天为宜,最多不要超过80天。第二,所选品种的需冷量要低,即满足自然休眠所需的低温累计时间短,7.2℃以下累计低温时间少于850小时。第三,要选择自花授粉,结实率高,果个大,色泽好,品质优良,较耐运输的品种。目前,我国适宜大棚栽培的 First, the variety should be appropriate At present, the cultivation of peach trees in our country generally promote pre-cultivation, that is, through the cover cultivation so that the fruits of the market early. Therefore, in the choice of species to pay attention to the following three points. First, to precocious varieties, the general fruit growth period of 60 to 70 days is appropriate, up to not more than 80 days. Second, the required cold capacity of the selected varieties is low, that is, the accumulated low temperature needed to satisfy natural dormancy is short, and the accumulated low temperature below 7.2 ℃ is less than 850 hours. Third, we must choose self-pollination, high seed rate, fruit a large, good color, good quality, more resistant to transport varieties. At present, our country suitable for greenhouse cultivation