论文部分内容阅读
1979年,两熟制试验在较肥沃的鳝血黄泥土上进行,土壤有机质含量3.46％,全氮0.174％,全磷0.18％,速效磷37.5ppm,速效钾67ppm。三熟制试验田为黄泥土,有机质含量2.7634％,全氮0.1779％,全磷0.170％,速效钾49ppm。试验分“V”字型、片仓氏、一哄头(对照)三种施肥法。一哄头为二次重复,其他均为三次重复。顺序排列,小区面积两熟制18.2×15尺(0.046亩),密度3×5寸,每亩4万穴;三熟制19.2×12尺(0.038亩),密度3×4.5寸,每亩4.4万穴。品种均为广陆矮4号
In 1979, the two-crop experiment was conducted on the more fertile Eel loessial soil. The soil organic matter content was 3.46%, total nitrogen 0.174%, total phosphorus 0.18%, available phosphorus 37.5ppm and available potassium 67ppm. Triad cooked field for the yellow soil, organic matter content 2.7634%, 0.1779% of total nitrogen, 0.170% of total phosphorus, available potassium 49ppm. Test points “V” shape, piece warehouse, a hurry (control) three kinds of fertilization method. A coercion for the second repeat, the rest are three repetitions. With a density of 3 × 5 inches and 40,000 acre per mu; a 19.2 × 12-foot (0.038 mu) mushy area with a density of 3 × 4.5 inches and 4.4 Million points. Varieties are Guanglu dwarf 4