棉田套种马铃薯,关键要掌握马铃薯的栽培技术。马铃薯的栽培应重点抓好以下几方面的技术。1、施足基肥马铃薯生长需要较多的养分,尤其需要较多的磷钾肥。肥料中氯、磷、钾的适宜比例为5:10:10。一般母亩有机肥4000—5000公斤,氯化钾10公斤。定植前起垄,垄高20厘米、宽45厘米,垄距80厘米。每3.2米或2.7米宽的畦各栽4行棉花、3行马铃薯。2、精心选种一般选用克星1号、早大白等早熟品种,每亩备种100公斤。种薯应无病虫、无冻害、光滑、大小适中。播种时将种薯纵向切块。一般采用“一刀二芽”或“一刀三芽”法切块,即从顶部向尾部纵向切一刀或两刀。薯块大小以50—60克为宜,切口面沾些草木灰,防止流液。3、适时播种马铃薯一般在元月下旬至2月上旬播种前10天每亩施三元复合肥25公斤,并使肥料与土壤充分拌和。然后在垄上开两条排种沟,沟深15厘 Intercropping cotton potatoes, the key to grasp the cultivation of potatoes. Potato cultivation should focus on the following aspects of technology. 1, Shizuji potato needs more nutrients for growth, in particular, need more phosphorus and potassium fertilizer. Fertilizer chlorine, phosphorus, potassium suitable ratio of 5:10:10. General mu organic fertilizer 4000-5000 kilograms, 10 kilograms of potassium chloride. Ridges before planting, ridge height 20 cm, width 45 cm, ridge distance 80 cm. Each 3.2 meters or 2.7 meters wide 畦 each planted 4 lines of cotton, 3 rows of potatoes. 2, carefully selected general election nemesis 1, early white and other early varieties, preparation of 100 kilograms per mu. Seedless potato should be no pests, no frost damage, smooth, medium size. Seeds will be cut vertically when planting. Generally use “knife two buds” or “knife three buds” law cutting block, that is, from the top to the tail longitudinal cut a knife or two knives. 50-60 grams of tuber size is appropriate, incision stained with ash, to prevent fluid. 3, timely sowing potatoes generally in late January to early February 10 days before sowing three yuan per acre compound fertilizer 25 kg, and fertilizers and soil fully blended. Then open two rows of furrows in the ridge, ditch deep 15%