论文部分内容阅读
据美帝《加利福尼亚商品肥料与植物养分》杂志1970年3月第120卷第3期报导,美加利福尼亚州在10英亩(60.7亩)以上的面积上获得每英亩12936磅(每亩1933.3市斤)的玉米产量。栽培措施是:使用高产杂交种“G4761”。1969年3月26日播种,行距30时(22.9市寸),9月16日收获。收获时每英亩29500株(每亩约4860侏)。每英亩施基肥:氮64磅(每亩9.6市
According to the American magazine, “The Fertilizer and Plant Nutrition of California,” March, 1970, Volume 120, Number 3, the United States of America reported that California received 12936 pounds per acre (1,933.3 kilograms per mu) over an area of 10 acres (60.7 acres) Of corn production. Cultivation measures are: the use of high-yield hybrid “G4761”. March 26, 1969 planting, spacing 30 (22.9 inch), September 16 harvest. 29,500 trees per acre at harvest (about 4860 juveniles per acre). Base fertilizer per acre: 64 pounds of nitrogen (9.6 municipalities per acre