论文部分内容阅读
徐州地区是江苏省花生重点产区,主要集中在地区东部新沂、东海、赣榆三县,常年花生面积占总耕地的10—20％,三县北部岗岭坡地,花生面积一般在30％以上。1981年三县花生产量占全地区的87％,占全省52％,平均单产308斤,最高单产1160.4斤。近年面积和产量都提高较快,实践证明三县的自然条件和生产条件有利于进一步发展花生生产。然而,一个比较突出的问题是产量年际波动很大,三县历年平均变动系数达22.7％,波动幅度之大,在各主要作物之上。影响花生产量逐年波动的因素是多方面的。那么,气象条件对花生产量影响的程度如何?
Xuzhou area is a key producing area of peanut in Jiangsu Province, mainly in the eastern part of the region Xinyi, East China Sea, Ganyu three counties, the perennial perennial area accounts for 10-20% of the total cultivated land, three counties north Gangling slope, peanut area is generally 30% the above. In 1981, the output of peanut in the three counties accounted for 87% of the whole region, accounting for 52% of the province, with an average yield of 308 pounds and the highest yield of 1160.4 kg. In recent years, the area and output have all increased rapidly. The natural conditions and production conditions of the three counties have proved beneficial to the further development of peanut production. However, one of the more outstanding problems is the large annual fluctuation of output. The average coefficient of variation of the three counties over the years has reached 22.7%, fluctuating by a large margin, above the major crops. The factors that affect the annual fluctuation of peanut production are many. So, the weather conditions on the impact of peanut production how?