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棉花产量是棉花栽培技术措施的综合反映。生产中各项栽培技术措施对产量影响的大小,仅从小面积的单项对比中,是很难搞清楚的。为了排除假象和干扰,我们于1986年从121团各连队选取有代表性的56块棉田(合计7600亩,品种为新陆早一号),借助电子计算机,从播期(X_1,以4月10日为X_1=0计算)、施N肥量(X_2,以亩施纯N公斤计算)、施P肥量(X_3,以亩施P_2O_5
Cotton yield is a comprehensive reflection of the technical measures of cotton cultivation. The impact of various cultivation techniques and measures on production in production is difficult to find out only from the individual comparison of small areas. In order to eliminate illusion and interference, we selected 56 representative cotton fields (totaling 7,600 acres, Xin Long Zao 1) from various companies of the 121 Regiment in 1986. Using computerized computers, we collected data from sowing dates (X_1, April On the 10th for the X_1 = 0 calculation), the amount of N fertilizer (X_2, calculated as Kushu N kg), the amount of P fertilizer (X_3 to Mushi Shi P_2O_5