摘要
为缓解陕西商洛地区甘薯、玉米争地问题,充分利用甘薯田间的光、热、水、肥资源,进一步提高单位耕地面积的产量和效益,以甘薯商薯19和甜玉米苏克甜1506为试验材料,商薯19采用大垄双行水平对栽法栽培,在垄沟内间作苏克甜1506,研究苏克甜1506的4种不同密度处理对商薯19产量的影响规律,筛选综合效益最佳的密度处理。结果表明:随着苏克甜1506种植密度的增大,第1商品果穗数也相应增加(P<0.01);第2商品果穗数呈现先增加后减少的趋势(P<0.01);而商薯19产量持续减少(P<0.01)。对于收获的甜玉米商品果穗数,苏克甜1506的密度不宜高于889株/667 m^(2);对于综合净收益,当苏克甜1506的密度为667株/667 m^(2)时,甘薯产量为2 801.4 kg/667 m^(2),甜玉米果穗商品数为1 284穗/667 m^(2),每667 m^(2)净收入为5 903.88元,收益最高,较甘薯单作收益增长770.86元/667 m^(2)。
To alleviate field competition between sweet potato and corn in the Shangluo area,fully utilize light,heat,water,and fertilizer resources,and further improve yield and benefits per unit of farmland,sweet potato Shangshu 19 and sweet corn Suketian 1506 are taken as the research objects.Shangshu 19 is cultivated using the“horizontal cultivation on large ridge by double row”method,and Suketian 1506 is intercropped in the furrows,so as to study the the effects of 4 different density treatments of Suketian 1506 on the yield of Shangshu 19 and screen out the density treatment with the best comprehensive benefit.The results show that as the density of intercropped Suketian 1506 increases,the number of commercial ears in upper position of the corn plant also increases(P<0.01),those in the lower increase first and then decrease(P<0.01),and the yield of Shangshu19 decreases(P<0.01).Based on the number of harvested commercial ears,the density of Suketian 1506 should not exceed 889 plants/667 m^(2).Based on the analysis of comprehensive net income,it is maximized at a density of 667 plants/667 m²,accordingly,the yield of sweet potato is 2801.4 kg,the number of commercial ears of sweet corn is 1284 and the net income is 5903.88 yuan per 667m^(2),which is 770.86 yuan more than that of cropping Shangshu 19 purely.This study provide reference for the efficient use of sweet potato field in Shangluo city.
作者
陈鹏博
Chen Pengbo(Shangluo Agricultural Science Research Institute,Shangluo 726000,China)
出处
《农业科学研究》
2024年第3期39-42,48,共5页
Journal of Agricultural Sciences
