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大化县1991年尝试旱地春玉米套种夏棉花,面积23.7亩,平均亩产玉米366公斤,皮棉35.7公斤.其套种栽培技术如下: 选择适宜播种期:玉米在2月上、中旬播种,采用地膜覆盖栽培技术;棉花6月初播种,亩用种量条播为5公斤,穴播为4公斤,覆土1.6厘米左右。棉花旱播,与玉米共生时间长,不利棉花壮苗;迟播则棉花生长后期开花结铃吐絮易受低温影响。
In 1991, Dahua experimented on spring cotton interplanting summer cotton in an area of 23.7 mu with an average yield of 366 kg of maize and 35.7 kg of cotton lint. The cultivation techniques of interplanting are as follows: Select suitable sowing time: sowing corn in mid-February and mid- Covering cultivation techniques; cotton sowing in early June, acres of seed sowing of 5 kg, hole sowing of 4 kg, soil cover about 1.6 cm. Cotton arid sowing, coexistence with corn for a long time, unfavorable cotton seedlings; late sowing cotton boll flowering boll opening late susceptible to low temperature.