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一、播前准备工作1.正确选用良种在同样的栽培条件下,良种较一般品种可增产30%-50%,尤其在晚疫病流行年份或马铃薯退化严重的地区,推广抗病品种可以成倍增产,甚至更多。①选择适宜当地条件的品种。由于气候条件不同,各地对马铃薯品种的要求也有所不同。如马铃薯在一年二作区,夏季温度高,6-7月份地下10厘米深度各旬平均温度已超过25℃,甚至高达30℃以上,这就需要前期生长速度快,结薯早的早熟品种。如果采用中晚熟品种,在夏季高温来临以前还未结薯,即受到高温的抑制,对产量影响极大。在一年一作地区,主要以选用中晚熟品种为宜,以便充分利用当地的生育期。但7、8月份多雨,病害经常流行,必须选用抗病品种。所以,恰当的选用优良品种,对增产具有重大意义。
I. Preparing for sowing 1. Proper selection of elite varieties Under the same cultivation conditions, elite varieties can increase yield by 30% -50% compared with common varieties. Especially in areas where the late blight epidemic or serious degeneration of potato occur, promotion of resistant varieties can be doubled Increase production, even more. ① select the appropriate local conditions of the species. Due to different climatic conditions, the requirements for potato varieties vary from place to place. Such as potatoes in two areas for the year, the summer temperature is high, the average depth of 10 centimeters underground in June-July 10-day average temperature has exceeded 25 ℃, or even up to 30 ℃ above, which requires early growth, early tuber early varieties . If the use of late-maturing varieties, in the summer before the advent of high temperature tuber, which is inhibited by high temperature, a great impact on the yield. In a year as a region, mainly in the selection of late-maturing varieties is appropriate, in order to make full use of the local growth period. However, rainy July and August, diseases are often prevalent and disease-resistant varieties must be selected. Therefore, the appropriate selection of fine varieties, the yield is of great significance.