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南丰县从1980年起,即在水稻生产上推广一次全层基施氮肥,虽在一些社队,取得了增产的效果,但不少群众存在氮肥一次施风险大(伯流失、伯肥不送老)的思想顾虑,致使这项技术大面积推广受到一定限制。为了用事实教育群众,并取得系统的科学数据,1982年下半年,南丰县在不同地形、不同土质的七个公社的九个生产单位进行了二晚氮肥一次全层基施和分次追施对比试验,各试点试验面积0.05～1.5亩不等,一般1亩左右。试验都安排在同一丘田内,中间筑临时田埂隔开,除氮肥施用方法不同外,其他如品种、播插期、大田管理等完全一样。在九个试验单位中还有四个单位设了
Since 1980, Nanfeng County has been promoting a full-scale nitrogenous fertilizer on rice production. Although it has achieved the effect of increasing production in some communes and brigades, many villagers have a large risk of using nitrogenous fertilizers at once (primary loss and loss of primary fertilizers Old) thoughts and concerns, resulting in the promotion of this technology a large area subject to certain restrictions. In order to factually educate the masses and obtain systematic scientific data, in the second half of 1982, Nanfeng County conducted nine full-scale base-dressing and sub-topdressing of two nitrogen fertilizers on nine production units in seven communes of different terrain and different soil types Contrast test, the pilot test area of 0.05 to 1.5 mu, generally about 1 acre. Tests are arranged in the same hilly fields, separated by a temporary ridge in the middle, except for the application of different nitrogen fertilizers, others such as varieties, sowing, field management, etc. exactly the same. There are four more units in the nine pilot units