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1983年春季,我团共播种油葵11,400亩.其中2,000亩用液氨作底肥,平均亩用量9.5公斤,结合播前整地施入土内15厘米处;其余面积平均亩施硝铵17.1公斤,生长期中用机力条追.油葵播种时均用磷肥作种肥,亩用量4.5公斤.为了摸清不同肥料不同施肥量对油葵生长发育的影响,我们同时进行多点无重复小区试验,共在不同土类不同肥力条田中布点
In the spring of 1983, a total of 11,400 were planted with oil sunflowers, of which 2,000 mu were used as base fertilizer with liquid ammonia, with an average amount of 9.5 kg of mu per mu, which was applied to 15 cm of soil in combination with pre-sowing. In the remaining area, In the growing period chasing the force of chasing. Sunflower sowing with phosphate fertilizer for fertilizer, mu amount of 4.5 kg. In order to find out the different fertilizers of different fertilizers on the growth and development of oil sunflower, we also carry out multi-point repeatless cell test , A total of different soil fertility in different fields in the field distribution