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我场红壤水溶态硼的含量为0.1ppm—0.16ppm,低于土壤通常缺硼临界值0.5ppm。我场先后进行了三年硼肥试验,去年施硼面积达25,000余亩,进一步肯定了硼肥的增产作用。硼对甘蓝型油菜增产效果特别显著,我场油菜施硼一般增产2—3成。1977年春节前后两次空前大雪,冻害严重,田间观察发现,凡是施用硼泥或苗期喷硼的油菜,死苗很少,冻害较轻。据我场农科所试验田逐区查苗结果,施硼比对照区冻害指数减少17.2%,冻痕也明显较轻,整个生育过程中植株生长差距明显。据成熟期观察,施用硼肥的比对照株高增39.7厘米,茎粗增0.55厘米,平均每株有效分枝多8个,荚果长度增2.2厘米,每荚子粒多11粒,平均单株干重共增27.5克。田间观察记载,对照区尚在盛花阶段,施硼区已普遍谢花,结荚累累,提前成熟5—7天。未施用
My field red soil water soluble boron content of 0.1ppm-0.16ppm, lower than the soil usually boron deficiency threshold of 0.5ppm. My field has carried out three years of boron fertilizer test, boron area of 25,000 acres last year, further affirmed the role of boron fertilizer production. Boron rapeseed yield increase effect is particularly significant, my field Rape boron yield generally 2-3. Two heavy snowfalls occurred before and after the Spring Festival of 1977, resulting in severe frost damage. Field observations showed that all the rapeseed with boron sludge or seedling sprayed with boron had little dead frog and less frost damage. According to my farm field by the field of investigation by the results of field investigation, application of boron than the control area frost damage index decreased by 17.2%, frozen marks are also significantly less, the entire plant growth during growth significantly. According to the maturity of the observation, the application of boron fertilizer than the control plant height increased by 39.7 cm, 0.55 cm thick stems, the average effective number of branches per plant more than 8, the pod length by 2.2 cm, more pods per pod 11, the average single plant dry Re added a total of 27.5 grams. Field observation records, the control area is still in full bloom stage, the boron area has been generally thank Xie flowers, pod accumulation, advance maturity 5-7 days. Not applied