一、秧田调查 1958年稻飞虱、浮尘子预测预报试行办法中规定的玻璃秧田取样器,构造笨重复杂,使用麻烦,玻璃又易打破。后来有人改用火油箱制成秧田取样器,以统计取样器内壁涂胶上所粘的虫数,但因器内黑暗又无法扰动秧苗,所粘得的叶蝉仅属少数,不能代表实际情 First, the seedling investigation 1958 rice planthopper, floating dust forecasting method stipulated in the glass seedling sampler, the structure is bulky and complicated, the use of trouble, glass and easy to break. Later, some people use the fuel tank to make a seedling sampler to count the number of sticky insects stuck on the inner wall of the sampler. However, because the darkness inside the sampler can not disturb the seedling, the sticky leafhopper is only a minority and can not represent the actual situation