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海涂棉田花铃肥施后 1个月测定田间微区 0～ 1 0 0 cm土层内的水分、盐分和养分的纵向分布及其相互关系是 :水分与盐分是极显著的正相关 ,与全 N和速效 N分别为极显著的负相关和显著负相关 ,盐分与全 N为显著的负相关。花铃肥施用技术的直接效应表现在功能叶含 N量以及 N肥利用率上 ;间接效应主要表现在蕾铃数量上 ,而在株高和生物学产量上 ,影响较小。从上述两种效应看 ,两年结果均以施肥盖草处理表现最好 ,其次是施肥浇水处理 ,再次是施肥不浇水处理。3种施肥处理均比空白对照区效果明显。
The longitudinal distribution of water, salt and nutrients in the 0 ~ 100 cm soil layer in the field micro-region at seafloor cotton bollworm 1 month after fertilization was determined as follows. The correlation between water and salt was extremely significant, N and available N were extremely significant negative correlation and significant negative correlation respectively, and negative correlation between salinity and total N was significant. The direct effect of bollworm fertilization technology was manifested in the N content of functional leaves and N fertilizer use efficiency. The indirect effects were mainly reflected in the numbers of buds, but less in plant height and biological yield. Judging from the above two effects, the result of two years showed the best performance with fertilizing and covering grass, followed by fertilization and watering, and again fertilization without watering. The three kinds of fertilization treatment than the blank control area effect is obvious.