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农六师110团—职工: 现对你信中所提出的问题作如下答复,供你在小麦生产实践中参考。 根据小麦阶段发育理论,冬小麦苗期需要经过一段相对较低的低温阶段,方能完成其春化过程而由营养生长进入生殖生长阶段。这种对低温的生理适应能力为冬小麦安全越冬提供了可能。冬小麦为适应恶劣的气候环境,均具有一定的抗御低温的能力——抗寒性。不同的品种,其抗寒能力不同。一般现有冬小麦品种仅能忍耐-12—-15℃的低温(指分蘖节地温),若超此界限冬小麦分蘖节便会受冻害,翌年春季分蘖节不再出生新的分蘖。这便称为“冻死”。在北疆冬
Farmers VI Division 110 Mission - Workers: The questions raised in your letter are as follows for your reference in the wheat production practice. According to the wheat stage developmental theory, the winter wheat seedling stage needs to go through a relatively low-temperature stage before it can complete the vernalization process and enter the reproductive growth stage from vegetative growth. This physiological ability to adapt to low temperature winter wheat overwinter provides the possibility. In order to adapt to the harsh climatic environment, winter wheat has a certain ability to resist cold - cold resistance. Different varieties, their ability to cold different. In general, the existing winter wheat varieties can only endure the cold temperature of -12 to -15 ° C (referring to the temperature of the tillering node). If the winter wheat tiller node exceeds this limit, it will be frostbite. No new tillers will be born in the next spring spring. This is called “freezing death.” In the northern winter