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采种甜菜种子产量的高低与移栽密度、田间管理等人为因素有一定关系,同时较大程度地受到播期早晚的制约。要提高甜菜制种产量,就要在摸清该地常年的气候规律的条件下,合理安排播期,充分利用各种有利的气象因素对甜菜生长发育的优势,达到预防和控制不利因素的目的。本试验试图在前两年试验的基础上,作进一步深入的观察、探讨,以期为提高大面积甜菜产量提供可靠的理论依据。
The seed yield of beet seeds is related to man-made factors such as transplanting density and field management, and to a greater extent, it is restricted by the sowing date. To improve the yield of sugar beet seed production, it is necessary to find out the perennial climate of the conditions under the conditions of a reasonable arrangement of sowing date, make full use of all kinds of favorable meteorological factors on the growth and development of sugar beet, the purpose of prevention and control of unfavorable factors . This experiment tries to make further in-depth observations and discussions on the basis of the previous two years of experiments, in order to provide a reliable theoretical basis for increasing the yield of large-area beet.