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(一)不同施肥制度的基本情况1.调查的赵宝森、季伴琴、王寿星三农户,施肥的特点主要是重视农家肥,适当配合化肥。如赵宝森家1982年全年平均亩施栏肥5000多斤,并采用稻草还田等措施。据计算该户1982年亩施氮磷钾有效成份总量为365.24斤,其中农家肥223.16斤,占总量的61.1%,1983年增至67.1%,两年平均为64.1%。如以纯氮而言,农家肥中的氮亩
(A) of the basic situation of different fertilization system 1. Investigation of Zhao Baosen, quarter with the piano, Wang Shouxing three farmers, the main characteristics of fertilizer is attached to the manure, with the appropriate fertilizer. For example, Zhao Baosen’s home averaged over 5,000 kilos of barley fertilizer per acre in 1982 and used such measures as straw returning to fields. According to the calculation, the total amount of active ingredients of N, P and K in the household in 1982 was 365.24 kg, of which 223.16 kg was manure, accounting for 61.1% of the total. In 1983, it increased to 67.1% with an average of 64.1% for both years. For example, in terms of pure nitrogen, nitrogen in the farm manure