天山北坡糯玉米复播蔬菜初探

Resowing Vegetables in Waxy Corn Field in the Northern Slope of Tianshan Mountains

在膜下滴灌条件下,为探索天山北坡无霜期155~168天内≥10℃的积温3110℃~3500℃的区域,于2015—2016年在第六师农科所试验地,以生育期为80~85天的糯玉米为前茬作物,以雪里蕻、快菜和秋萝卜为复播作物,研究了糯玉米+雪里蕻、糯玉米+快菜、糯玉米+秋萝卜复播模式及最佳种植密度,并对3种复播蔬菜的平均产量、产值和效益进行分析比较。结果表明,两年连续复播雪里蕻或者快菜,平均产量、产值和效益的差异极显著。复播3种蔬菜的产量、产值和效益排序是雪里蕻>快菜>秋萝卜。天山北坡糯玉米复播蔬菜的高产高效模式,是糯玉米+雪里蕻,纯收入为236.32元/m^2:糯玉米种植最佳密度是7.5株/m^2,复播雪里蕻种植最佳密度为6.3株/m^2。

The aim is to explore areas with≥10℃ accumulated temperature of 3110℃-3500℃ in the northernslope of Tianshan Mountains in 155-168 days of frost free period under drip irrigation. From 2015 to 2016, inexperimental field of the Sixth Division of Agricultural Science Research Institute, waxy corn with 80-85 daysgrowth period was used as preceding crop, potherb mustard, Chinses cabbage and autumn radish were used asresowing vegetables. The resowing models（waxy corn ＋ potherb mustard, waxy corn ＋ Chinses cabbage, waxycorn＋autumn radish） and the optimum planting density were studied. The average yield, output and benefit ofthe three resowing models were analyzed and compared. The results showed that two years＇ continuous sowingof potherb mustard or Chinses cabbage had significantly different average yield, output and benefit. The yield,output value and benefit of resowing of the three vegetables followed an order of potherb mustard 〉Chinsescabbage〉autumn radish. The high yield and high efficiency model of resowing vegetable in waxy corn field iswaxy corn ＋ potherb mustard, the net income is 236.32 yuan/m^2. The optimum planting density of waxy corn is 7.5 plants/m^2, and the optimum planting density of resowing potherb mustard is 6.3 plants/m^2.