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一、深层追肥的定义:深层追肥是以培育理想型水稻为宗旨,仅在操作上实施深层追肥,这不能叫做深层追肥种稻。 二、理想型水稻:深层追肥栽培的理想型水稻,就是意味着没有无益生育的健壮水稻,就是指无效分蘖极少、空秕粒很少和不徒长的水稻而言。上述的含意就是下位叶不易枯萎、下位节间短粗,叶片厚而挺拔的水稻。 三、两条生长原则:所谓没有无益生育的健壮水稻,是什么意思呢?为了理解这个问题,需要知道分蘖过剩危害和总粒数过多危害这两条生长原则的意义。分蘖过多,茎秆就要变细,下位节间容易伸长。如果看根,则表层根增多,容易过多之后,产生根腐观象。我把它叫做分蘖过剩危害。分蘖有效茎秆就下降,并且生育软弱。深层追肥具有容易提高有效茎率的作用。为了发挥
First, the definition of deep dressing: deep dressing is to cultivate the ideal type of rice for the purpose, only in the operation of the implementation of deep dressing, which can not be called deep dressing fertilizer rice. Second, the ideal type of rice: deep top dressing cultivation of the ideal type of rice, is meant to have no unprofitable birth of robust rice, refers to the ineffective tillers with very few Kong Kong few and not impracticable in terms of rice. The meaning of the above is not easy to wilt lower leaves, lower internodes thick, thick leaves and tall and straight rice. Three, two growth principles: What is the meaning of the so-called robust rice without useful fertility? In order to understand this problem, we need to know the significance of the two growth principles of excessive tiller damage and excessive total grain number. Too many tillers, the stems should be thinner, easy to elongate internodes. If you look at the root, the surface root increases, easy too much, root rot phenomenon. I call it excess tiller damage. Effective tillers tilted down, and fertility is weak. Deep dressing has the effect of easily increasing the effective stalk rate. In order to play