陝北是个杂粮产区,谷子是主要粮食作物之一。它的种植面积虽大,但仅限于山地,在水、肥条件优越的川地郤栽培很少,甚至不种谷子,原因是川地谷子植株虽然生长良好,而产量不高,有大量癟穗发生。这种現象值得引起科学工作者重視和研研。 1959年谷子生长后期,在綏德水土保持試验站,县农場以及农业社的川地丰产谷田,又严重的出現了癟穗問題,并有造成毁灭性灾害的危险,我們即进行了初步調查工作。經大量取样检查和簡单的进行了培养和鏡检結果,初步确定所謂癟穗問題,主要由谷瘟病和紅叶病所造成,还有一少部分是由于玉米螟和粟灰螟在茎杆中的为害引起的。但由于調查的时間較 Northern Shaanxi is a miscellaneous grain producing area, millet is one of the main food crops. Although its planting area is large, it is limited to the mountainous areas, but cultivated in the water and fertile areas of Sichuan Province is very little or not planted with millet seeds. The reason is that although the plants of the millet field grow well and the yield is not high, occur. This phenomenon deserves to attract scientific workers to pay attention to and research. In the late 1959 millet growth period, at the Suide Soil and Water Conservation Experiment Station, the county farm, and the agricultural cooperatives in Sichuan’s high yield valley, there was a serious problem of defoliation and the risk of devastating disasters. We conducted a preliminary investigation jobs. After a large number of sampling checks and simple culture and microscopic examination results, the so-called defocused panicle problem was primarily identified, mainly caused by the blast and the red leaf disease, and a small part due to the fact that the corn borer and the corn borer were in the stem Caused by damage. However, due to the investigation of time