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本项多点试验布置在插秧的拉特纳(Ratna)水稻田块。这项试验是“全印土壤测试与作物产量效应相关性协作计划”中的一个组成部分。由4个氮用量(0、40、80、120公斤/公顷),4个磷素用量(0、30、60、90公斤/公顷)和2个钾素用量(0、30公斤/公顷)组成的32个组合中,随机选取16个处理,安排在12个试验点内进行试验。每个试验小区的净面积为20米~2,试验前分析土壤的理化特性如表1。
This multi-point test is arranged on the Ratna paddy field planted with rice. This experiment is an integral part of the Collaboration Plan for Correlating All-India Soil Testing and Crop Yield Effects. It was composed of 4 nitrogen levels (0, 40, 80, 120 kg / ha), 4 phosphorus levels (0, 30, 60 and 90 kg / ha) and 2 potassium levels (0 and 30 kg / ha) Of the 32 combinations, randomly selected 16 treatment, arranged in 12 test points to be tested. The net area of each test plot is 20 m ~ 2, and the physical and chemical characteristics of the soil before the test are shown in Table 1.