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农桐间作对小麦产量的影响,国内曾作过较为广泛的研究报道,确认农桐间作对小麦有明显的增产作用,其增产的幅度为0.8—38.8％。这样宽的增产幅度引起了我们的思考:除了客观条件诸如桐行走向、栽植密度、树龄、土壤肥力、管理水平及气象条件等的影响外,在主观评价方面,测算方法的不同和对照点选择上的差异,也必然在某种程度上给调查结果带来偏差和误差、影响农桐间作小麦产量效应的正确评价。 目前江苏农桐间作一般是按50×6米规格种植。若在间作地内人为地确定对照点是不科学的;若在间作地外选择一块不受泡桐
Intercropping wheat on the yield of wheat, China has made a more extensive study reported that Agropyrones intercropping significant increase of wheat yield, the rate of increase of 0.8-38.8%. Such a wide range of production increases aroused our consideration: In addition to the objective conditions such as the trend of Tong walking, planting density, age, soil fertility, management and meteorological conditions, the impact of subjective evaluation, the measurement method is different and the choice of control points The differences also inevitably bring about some discrepancies and errors to the survey results, which will affect the correct evaluation of the wheat yield effect. At present, Jiangsu Nong Tong intercropping is generally planted by 50 × 6 meters specifications. If in the intercropping artificially determine the control point is unscientific; if the intercropping to choose a free from Paulownia