N. Khatri, B. P. Pandey, M. Yadav, B. Chaurasia, M. Bista, B. Kunwar
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引用次数: 0
摘要
在2018-19冬季水稻-水稻-小麦系统长期土壤肥力试验中，研究了小麦杂草动态和产量及产量参数。试验采用随机完全区组设计，9个处理重复3次。处理为:T1-不添加营养，T2-添加氮;T3-添加N和P;T4-添加N和K;T5- N2:P2O5:K2O按所有作物的推荐添加率添加。同样，水稻中T6- N和小麦中N2:P2O5:K2O的推荐添加量;T7- 1 / 2 N;T8-两种作物推荐产量的一半;T9——所有轮作作物施用农家肥10吨每公顷。结果表明，施用10 t hm -1农家肥可显著提高水稻产量，达到2393 kg hm -1，其次施用化肥推荐用量为100:40:30 N:P2O5:K20 kg hm -1，达到2383 kg hm -1。相当程度上，不施磷处理的籽粒产量较低。同样，与N、P2O5和K2O的任何处理或所有不施肥处理相比，施用FYM @10 t hm -1后推荐施肥剂量的杂草密度和干杂草重更高。
Weed Dynamics and Yield of Wheat in Long Term Soil Fertility Experiment under Rice-Rice-Wheat Cropping System
Weed dynamics and yield and yield parameters of wheat was studied in long-term soil fertility experiment under rice-rice-wheat system during winter season of 2018-19. The experiment was laid out in randomized complete block design with nine treatments replicated three times. Treatments were applied as: T1- no nutrients added, T2- N added; T3- N and P added; T4- N and K added; T5- N2:P2O5:K2O added at recommended rate for all crops. Similarly, T6- only N added in rice and N2:P2O5:K2O in wheat at recommended rate; T7- half N; T8- half NP of recommended rate for both crops; and T9- farmyard manure @10 t ha-1 for all crops in rotation. The results revealed that the use of Farm Yard Manure @ 10 t ha-1 gave significantly higher yield of 2393 kg ha-1 followed by recommended chemical fertilizer dose of 100:40:30 N:P2O5:K20 kg ha-1 of 2383 kg ha-1. Considerably, lower grain yield was obtained from treatments that did not receive phosphorus. Similarly, application of FYM @10 t ha-1 followed by recommended fertilizer dose recorded higher weed density and dry weed weight with compared to any of N,P2O5 and K2O or all nutrient omitted treatments.
期刊介绍：
The Journal of Agriculture and Environment for International Development is an international, multidisciplinary journal dealing with agricultural production, food security, environment, remote sensing and natural resources evaluation, economics and social science, rural development and soil science. The Journal publishes scientific, technical and extensional papers concerning activities devoted to Developing Countries and Countries in transition. The language of the Journal is English. Starting from 2015, papers in other languages will not be accepted.
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