论文部分内容阅读
硼是油菜正常生长发育中不可缺少的一种微量元素,国内外许多研究资料表明,甘兰型油菜对硼素营养的反应更为敏感,缺硼可造成幼苗死亡和“花而不实”,喷施硼肥能获得明显的增产效果。为了探明油菜硼肥最佳喷施期,1979～1982年我所进行本项试验。一、材料与方法试验选用甘兰型油菜中熟品种赣油1号。试验田施纯氮10公斤、钙镁磷25公斤、氯化钾12.5公斤。硼肥为0.15％农用硼砂溶液。施硼肥时期设5个处理.(1)苗期(五叶期);
Boron is an indispensable trace element in the normal growth and development of rape. Many research data at home and abroad show that Brassica napus is more sensitive to boron nutrition, and boron deficiency can cause seedling death and " Boron fertilizer can be significantly increased yield. In order to ascertain the best spraying period of rapeseed, I conducted this test from 1979 to 1982. First, the materials and methods of test selection Brassica napus cooked varieties Gan oil on the 1st. Experimental field applied pure nitrogen 10 kg, 25 kg of calcium magnesium phosphate, potassium chloride 12.5 kg. Boron 0.15% agricultural borax solution. Five treatments were applied during the period of applying boron fertilizer. (1) Seedling stage (five leaf stage);