论文部分内容阅读
以在长江下游沿江地区建立春玉米为中心的多元多熟高产高效新型种植体系为目标 ,设置了玉 豆同钵苗两段覆膜、玉 豆同钵苗露地移栽、玉 豆分行两段膜间栽 3种玉 豆复合种植方式和纯种植玉米、毛豆 5个处理的产量效应和经济效益对比试验。研究了在不同复合种植方式的条件下 ,春玉米、春毛豆两作物的收获产量 ,群体的光合面积效应 ,能量投入、产出及能量产投比 ,土壤有机质形成量及N、P2 O5 、K2 O等养分平衡 ,以及产值、成本、纯收益、新增纯收益率、边际成本报酬率等经济效益指标 ,结果表明 :在不降低现行春玉米种植密度 (82 5 0 0株 /hm2 )的前提下 ,通过两段膜技术 ,实现玉 豆同钵苗方式、玉 豆分行间栽方式 ,都具有显著的增产效应和生态经济效益
With the goal of establishing a new multi-cropping system with high yield and high efficiency centered on spring maize in the Yangtze River’s lower reaches of the Yangtze River, two sections of jadebean seedlings, Intercropping three kinds of jade planted composite planting methods and purely planting corn, soybean germplasm five treatment yield and economic benefits comparison test. The effects of different compound planting methods on harvest yield, photosynthetic area effect, energy input, output and energy production ratio, soil organic matter formation and N, P2O5, K2 O, and other economic balances as well as economic indicators such as output value, cost, net income, newly added net profit rate and marginal cost return rate. The results showed that without reducing the planting density (82 500 plants / hm2) Premise, through two sections of membrane technology, to achieve the same way with the pot seedlings Jade, inter-branch planted Yadu, have a significant yield-increasing effect and ecological and economic benefits