广西旱地分带间套轮作试验示范研究

STUDIES ON THE ROTA TION TEST AND THE DEMONSTRATION OF DIVIDED STRIP INTERCROPPING AND REAL CROPPING IN GUANGXI ARID LAND

于1986～1988年,在广西六个县、市进行了旱地分带种植试验、示范,已取得了预期效果。(1)经济产量比对照高187.9kg/亩,增产44.4%;(2)纯收入比对照高108.1元/亩,增收83.7%;(3)每个工日产粮、产值比对照分别高7.6 kg、2.7元/工,增54.7%、37.0%;每元投入产粮、产值比对照分别高1.2kg、0.7元,增33.3%、41.2%; (4)产/投能量效率高31%;每投一单位辅助能,产生物能,食物能比对照分剐高400kcal、120kcal;光能利用率及光能生产率此对照分别多0.17%,0.1%;(5)土地等量比率(L.E.R)为对照的4.4倍;(6)土壤肥力比对照有所提高。

The fixed-positional rotation test,and the demonstration of divided strip intercropping and real cropping in arid land were conducted in Quanzhou,Laibin,Douan,Jingxi,Xincheng and Guangxi Agricultural College during 1986～1988.The average results are as follows: (1)The economic yields of the strip planting crops increased 44.4% and 187.9kg/mu as compared with the CK. (2)The net income by the divided strip planting increased 83.7% and 108.1 yen/mu as compared with.the CK. (3)Compared with the CK,the produced food and value in a day by the divided strip planting increased 7.6kg(54.7%),2.7 yen(37.0%) and productive food and value per yen investment 1.2kg(33.3%),0.7yen (41.2%)respectively. (4)The efficiency of energy couversion in the divided strip planting was higher than that in the CK.(a)the ratio of output/input was 31% higher than that of CK,the produced biotic energy and food energy per one unit invested assistant energy were 400kcal and 120kcal higher than those of the CK.(b)the utilized and produced efficiencies of light energy were 0.17%and 0.1% higher than those of the CK. (5)The land equivalent ratio(L.E.R)in the divided strip planting was 4.4 times higher than that in the CK. (6)Soil fertility in th divided strip planting lands had a little increase or the nutrition balance of soil was coordinated as compared with the CK.