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上海郊区油菜的前茬稻板茬多,土壤板结,移栽期推迟。因此,除了选育早熟高产的良种外,必须相应地改进栽培措施,才能不断提高油菜的产量。近几年来,我们在培育油菜壮秧、合理密植等方面,作了初步的调查研究和对比试验,对提高油菜的单产起到一定的作用,现将情况简述如下: 一、壮秧与产量的关系“壮秧三分收,弱秧一半丢”,这说明培育好油菜壮秧的重要性。油菜的角果是由花芽发育而成的,早熟品种的油菜主轴上的花
Shanghai suburbs of rapeseed rape crop stubble more, soil compaction, transplanting delayed. Therefore, in addition to breeding good varieties of early maturity and high yield, we must correspondingly improve the cultivation measures in order to continuously improve the yield of rapeseed. In recent years, we have done a preliminary investigation and comparative experiment in cultivating strong seedlings of rapeseed and planting them in a close and reasonable manner, which will play a certain role in improving the yield of rapeseed. The situation is briefly described as follows: 1. Strong seedling and yield The relationship between “strong seedling third points received, weak seedlings half lost”, which shows the importance of nurturing good seedling rape. The rapeseed pod is a flower developed from flower buds, a flower of the precocious rape spindle