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华中农业大学农化教研室关于棉花缺硼的报道指出,棉花因缺硼而产生的叶柄环带,可作为棉花缺硼的形态特征。通过在湖北天门、江苏启东两地的研究结果,证明棉花环带叶柄率与土壤有效硼含量(X)呈负相关,迥归方程式:■=6.033x~(-1.1266) 按照这个方程式,当棉田土壤有效硼在硼缺临界值(0.8ppm)附近,棉花环带叶柄率约为8%,故以棉花环带叶柄率8%指导棉花缺硼的苗情诊断。研究工作还指出,在土壤有效硼含量较高的情况下,环带叶柄的多少与土壤水分的多少呈正相关,故在多雨、土壤水分多的长江流域棉区研究提出的迥归方程式及诊断指标是否适用于干旱、土壤有效硼较高的黄河
Huazhong Agricultural University, Department of Agrochemicals on the lack of boron cotton report pointed out that cotton boron deficiency due to the petiole annulus, can be used as cotton boron deficiency morphological characteristics. According to the results of Tianmen in Hubei Province and Qidong in Jiangsu Province, it was proved that the petioles rate of cotton ring was negatively correlated with available boron (X) in the soil, and the regression equation was: ■ = 6.033x ~ (-1.1266) According to this equation, Soil available boron in boron deficiency threshold (0.8ppm) near the cotton ring petioles rate of about 8%, so the cotton ring petioles rate of 8% to guide the lack of boron cotton seedling diagnosis. The research also pointed out that in the case of high available boron content, the number of petioles in the ring is positively correlated with the amount of soil moisture. Therefore, in the rainy and soil moisture regions, the regression equations and diagnostic criteria Whether it is suitable for the Yellow River with drought and high soil available boron