有五种方法用于水利灌溉：土地漫灌，垄沟灌溉，喷洒法，地下灌溉和滴灌法。

There are five methods of applying irrigation water to fields-flooding, furrow irrigation, sprinkling, sub-irrigation, and trickle irrigation.

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喷洒法的结果也表明，在分蘖期，外源GA主要是促进基部第一、第二节间伸长，而第三节间及叶片则无显著增长。

At tillering stage, spraying GA solution to the dwarf mutant could promote the elongation of the first and the second internode, but no significant effect on the length of the third internode.

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防治法：早春刮去老树皮，冬季毁灭向日葵、玉米遗株，喷洒高效低毒农药。

To the wind the prevention: early spring old bark, winter destroy sunflower, corn testament, spray pesticide plant high-efficiency.

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